Research ArticleAccepted Article
Open Access
Test-retest reliability for HAQ-DI and SF-36 PF for the measurement of physical function in psoriatic arthritis
Ying Ying Leung, William Tillett, Pil Hojgaard, Ana-Maria Orbai, Richard Holland, Ashish J. Mathew, Niti Goel, Jeffrey Chau, Chris Lindsay, Alexis Ogdie, Laura C. Coates, Robin Christensen, Philip Mease, Vibeke Strand and Dafna D. Gladman
The Journal of Rheumatology April 2021, jrheum.210175; DOI: https://doi.org/10.3899/jrheum.210175
Ying Ying Leung
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
William Tillett
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Pil Hojgaard
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Ana-Maria Orbai
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Richard Holland
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Ashish J. Mathew
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Niti Goel
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Jeffrey Chau
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Chris Lindsay
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Alexis Ogdie
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Laura C. Coates
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Robin Christensen
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Philip Mease
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Vibeke Strand
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
Dafna D. Gladman
Singapore General Hospital, Duke-NUS Medical School, Singapore; Duke-NUS Medical School, Singapore; Royal National Hospital for Rheumatic Diseases, University of Bath, Bath, United Kingdom; Department of Rheumatology, Holbaek Hospital, Danmark; Section for Biostatistics and Evidence-Based Research, the Parker Institute, Bispebjerg and Frederiksberg Hospital, Copenhagen; Division of Rheumatology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA; Concord Repatriation General Hospital, Sydney, Australia; The Copenhagen Center for Arthritis Research, Centre for Rheumatology and Spine Disorders, Rigshospitalet Glostrup, University of Copenhagen, Denmark; Centre for Prognosis Studies in Rheumatic Diseases, Division of Rheumatology, Department of Medicine, University of Toronto, Toronto, Ontario Canada; Department of Clinical Immunology & Rheumatology, Christian Medical College, Vellore, India; Patient Research Partner, Adjunct Assistant Professor, Duke University School of Medicine, Durham, North Carolina, USA; Patient Research Partner, Hong Kong; Patient Research Partner, Employed by Aurinia Pharma US Inc., Prosper, Texas USA; Medicine and Epidemiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA; National Institute for Health Research Clinician Scientist, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, United Kingdom; Research Unit of Rheumatology, Department of Clinical Research, University of Southern Denmark, Odense University Hospital, Denmark; Rheumatology Research, Swedish Medical Center and University of Washington School of Medicine, Seattle, Washington, USA; Division of Immunology/Rheumatology, Stanford University School of Medicine, Palo Alto, California, USA; Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Arthritis Program, University Health Network, Toronto Western Hospital, Toronto, Ontario, Canada. Correspondence to: Ying-Ying Leung, MD; Department of Rheumatology and Immunology, Singapore General Hospital, The Academia, level 4, 20 College Road, Singapore 169856. E-mail: katyccc@hotmail.com
In this issue
The Journal of Rheumatology
Vol. 51, Issue 4
1 Apr 2024
Accepted manuscript
Test-retest reliability for HAQ-DI and SF-36 PF for the measurement of physical function in psoriatic arthritis
Ying Ying Leung, William Tillett, Pil Hojgaard, Ana-Maria Orbai, Richard Holland, Ashish J. Mathew, Niti Goel, Jeffrey Chau, Chris Lindsay, Alexis Ogdie, Laura C. Coates, Robin Christensen, Philip Mease, Vibeke Strand, Dafna D. Gladman
The Journal of Rheumatology Apr 2021, jrheum.210175; DOI: 10.3899/jrheum.210175
Accepted manuscript
Test-retest reliability for HAQ-DI and SF-36 PF for the measurement of physical function in psoriatic arthritis
Ying Ying Leung, William Tillett, Pil Hojgaard, Ana-Maria Orbai, Richard Holland, Ashish J. Mathew, Niti Goel, Jeffrey Chau, Chris Lindsay, Alexis Ogdie, Laura C. Coates, Robin Christensen, Philip Mease, Vibeke Strand, Dafna D. Gladman
The Journal of Rheumatology Apr 2021, jrheum.210175; DOI: 10.3899/jrheum.210175