Research ArticleArticle
PsAID12 Provisionally Endorsed at OMERACT 2018 as Core Outcome Measure to Assess Psoriatic Arthritis-specific Health-related Quality of Life in Clinical Trials
Ana-Maria Orbai, Richard Holland, Ying Ying Leung, William Tillett, Niti Goel, Robin Christensen, Neil McHugh, Laure Gossec, Maarten de Wit, Pil Højgaard, Laura C. Coates, Philip J. Mease, Julie Birt, Lara Fallon, Oliver FitzGerald, Alexis Ogdie, Beverly Shea, Vibeke Strand, Kristina Callis Duffin, Peter Tugwell, Dorcas Beaton and Dafna D. Gladman
The Journal of Rheumatology December 2018, jrheum.181077; DOI: https://doi.org/10.3899/jrheum.181077
Ana-Maria Orbai
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Richard Holland
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Ying Ying Leung
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
William Tillett
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Niti Goel
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Robin Christensen
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Neil McHugh
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Laure Gossec
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Maarten de Wit
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Pil Højgaard
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Laura C. Coates
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Philip J. Mease
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Julie Birt
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Lara Fallon
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Oliver FitzGerald
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Alexis Ogdie
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Beverly Shea
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Vibeke Strand
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Kristina Callis Duffin
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Peter Tugwell
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Dorcas Beaton
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Dafna D. Gladman
From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland. AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award. A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network. Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu. Accepted for publication November 6, 2018.
Article Information
jrheum.181077
PubMed
Published By
Print ISSN
Online ISSN
History
- Published online December 15, 2018.
Article Versions
- You are currently viewing a Latest version of this article (December 15, 2018 - 04:00).
- View the most recent version of this article
Copyright & Usage
© 2018 The Journal of Rheumatology
Author Information
- Ana-Maria Orbai,
- Richard Holland,
- Ying Ying Leung,
- William Tillett,
- Niti Goel,
- Robin Christensen,
- Neil McHugh,
- Laure Gossec,
- Maarten de Wit,
- Pil Højgaard,
- Laura C. Coates,
- Philip J. Mease,
- Julie Birt,
- Lara Fallon,
- Oliver FitzGerald,
- Alexis Ogdie,
- Beverly Shea,
- Vibeke Strand,
- Kristina Callis Duffin,
- Peter Tugwell,
- Dorcas Beaton and
- Dafna D. Gladman
- From the Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore; Department of Medicine, Duke University School of Medicine, Durham, North Carolina; Kezar Life Sciences, South San Francisco; Division of Immunology, Stanford University, Palo Alto, California; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington; Global Patient Outcomes and Real World Evidence, Eli Lilly and Co., Indianapolis, Indiana; University of Pennsylvania, Philadelphia, Pennsylvania; Department of Dermatology, University of Utah, Salt Lake City, Utah, USA; Royal Prince Alfred Hospital Medical Centre, Sydney, Australia; Department of Rheumatology and Immunology, Singapore General Hospital, Singapore; Royal National Hospital for Rheumatic Diseases, Bath; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK; Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Department of Rheumatology, Odense University Hospital, Odense, Denmark; Sorbonne Université; Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP, Paris, France; VU Medical Centre, Amsterdam, the Netherlands; Global Medical Affairs, Pfizer Inc., Montreal, Quebec; Clinical Epidemiology Program, Ottawa Hospital Research Institute; Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health; Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, Institute for Health Policy Management and Evaluation, University of Toronto; University of Toronto; Krembil Research Institute; Psoriatic Arthritis Program, University Health Network, Toronto, Ontario, Canada; Department of Rheumatology, St. Vincent’s University Hospital and Conway Institute for Biomolecular Research, University College Dublin, Dublin, Ireland.
AMO is a Jerome L. Greene Foundation Scholar and is supported in part by a research grant from the US National Institute of Arthritis and Musculoskeletal and Skin Diseases of the US National Institutes of Health under award number P30-AR070254 (Core B), a Rheumatology Research Foundation Scientist Development award, and a Staurulakis Family Discovery award.
A.M. Orbai, MD, MHS, Division of Rheumatology, Johns Hopkins University School of Medicine; R. Holland, MB, ChB, Royal Prince Alfred Hospital Medical Centre; Y.Y. Leung, MD, PhD, Department of Rheumatology and Immunology, Singapore General Hospital; W. Tillett, BSc, MBChB, PhD, MRCP, Royal National Hospital for Rheumatic Diseases; N. Goel, MD, Patient Research Partner, Department of Medicine, Duke University School of Medicine, and Kezar Life Sciences; R. Christensen, BSc, MSc, PhD, Professor of Biostatistics and Clinical Epidemiology, and Musculoskeletal Statistics Unit: The Parker Institute, Bispebjerg and Frederiksberg Hospital, and Department of Rheumatology, Odense University Hospital; N. McHugh, MBChB, MD, FRCP, FRCPath, Royal National Hospital for Rheumatic Diseases; L. Gossec, MD, PhD, Sorbonne Université, and Rheumatology Department, Pitié Salpêtrière Hospital, AP-HP; M. de Wit, PhD, Patient Research Partner, VU Medical Centre; P. Højgaard, MD, The Parker Institute, Bispebjerg and Frederiksberg Hospital; L.C. Coates, MBChB, PhD, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford; P.J. Mease, MD, Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine; J. Birt, PharmD, Global Patient Outcomes and Real World Evidence, and Eli Lilly and Co.; L. Fallon, PhD, Global Medical Affairs, Pfizer Inc.; O. FitzGerald, MD, FRCPI, FRCP(UK), Newman Clinical Research Professor, Department of Rheumatology, St. Vincent’s University Hospital, and Conway Institute for Biomolecular Research, University College Dublin; A. Ogdie, MD, MSCE, University of Pennsylvania; B. Shea, PhD, Clinical Epidemiology Program, Ottawa Hospital Research Institute, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa; V. Strand, MD, Division of Immunology, Stanford University; K. Callis Duffin, MD, Department of Dermatology, University of Utah; P. Tugwell, Division of Rheumatology, Department of Medicine, and School of Epidemiology and Public Health, Faculty of Medicine, University of Ottawa, and Clinical Epidemiology Program, Ottawa Hospital Research Institute; D. Beaton, BScOT, PhD, Musculoskeletal Health and Outcomes Research, St. Michael’s Hospital and Institute for Work and Health, and Department of Occupational Science and Occupational Therapy, Rehabilitation Sciences Institute, and the Institute for Health Policy Management and Evaluation, University of Toronto; D.D. Gladman, MD, FRCPC, Professor of Medicine, University of Toronto, and Senior Scientist, Krembil Research Institute, and Director, Psoriatic Arthritis Program, University Health Network.
Address correspondence to Dr. A.M. Orbai, MD, MHS, Assistant Professor of Medicine, Rheumatology, Director Psoriatic Arthritis Program, Johns Hopkins University School of Medicine, Division of Rheumatology, 5200 Eastern Ave., MFL Center Tower Suite 4100, Baltimore, Maryland 21224, USA. E-mail: aorbai1@jhmi.edu.
Accepted for publication November 6, 2018.
Article usage
Statistics from Altmetric.com
In this issue
The Journal of Rheumatology
Vol. 51, Issue 3
1 Mar 2024
PsAID12 Provisionally Endorsed at OMERACT 2018 as Core Outcome Measure to Assess Psoriatic Arthritis-specific Health-related Quality of Life in Clinical Trials
Ana-Maria Orbai, Richard Holland, Ying Ying Leung, William Tillett, Niti Goel, Robin Christensen, Neil McHugh, Laure Gossec, Maarten de Wit, Pil Højgaard, Laura C. Coates, Philip J. Mease, Julie Birt, Lara Fallon, Oliver FitzGerald, Alexis Ogdie, Beverly Shea, Vibeke Strand, Kristina Callis Duffin, Peter Tugwell, Dorcas Beaton, Dafna D. Gladman
The Journal of Rheumatology Dec 2018, jrheum.181077; DOI: 10.3899/jrheum.181077
PsAID12 Provisionally Endorsed at OMERACT 2018 as Core Outcome Measure to Assess Psoriatic Arthritis-specific Health-related Quality of Life in Clinical Trials
Ana-Maria Orbai, Richard Holland, Ying Ying Leung, William Tillett, Niti Goel, Robin Christensen, Neil McHugh, Laure Gossec, Maarten de Wit, Pil Højgaard, Laura C. Coates, Philip J. Mease, Julie Birt, Lara Fallon, Oliver FitzGerald, Alexis Ogdie, Beverly Shea, Vibeke Strand, Kristina Callis Duffin, Peter Tugwell, Dorcas Beaton, Dafna D. Gladman
The Journal of Rheumatology Dec 2018, jrheum.181077; DOI: 10.3899/jrheum.181077