Research ArticleArticle
Identifying and Characterizing Psoriasis and Psoriatic Arthritis Patients in Ontario Administrative Data: A Population-based Study From 1991 to 2015
Lihi Eder, Jessica Widdifield, Cheryl F. Rosen, Raed Alhusayen, Stephanie Y. Cheng, Jacqueline Young, Willemina Campbell, Sasha Bernatsky, Dafna D. Gladman, Michael Paterson and Karen Tu
The Journal of Rheumatology February 2020, jrheum.190659; DOI: https://doi.org/10.3899/jrheum.190659
Lihi Eder
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Jessica Widdifield
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Cheryl F. Rosen
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Raed Alhusayen
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Stephanie Y. Cheng
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Jacqueline Young
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Willemina Campbell
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Sasha Bernatsky
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Dafna D. Gladman
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Michael Paterson
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
Karen Tu
This study was supported by grants from the International Psoriasis and Arthritis Team (IPART) and the Canadian Rheumatology Association [Canadian Initiative for Outcome in Rheumatology Care (CIORA)]. L. Eder is supported by a New Investigator Salary Award from the Arthritis Society. K. Tu is supported by a research scholar award by the Department of Family and Community Medicine at the University of Toronto. This study was also supported by ICES, which is funded by an annual grant from the Ontario Ministry of Health and Long-Term Care (MOHLTC). Parts of this material are based on data and information compiled and provided by the MOHLTC and the Canadian Institute for Health Information. The analyses, conclusions, opinions, and statements expressed herein are solely those of the authors and do not reflect those of the funding or data sources; no endorsement is intended or should be inferred. L. Eder, MD, PhD, Assistant Professor of Medicine, University of Toronto, and Women’s College Research Institute, Women’s College Hospital, Toronto; J. Widdifield, PhD, Assistant Professor, University of Toronto, Institute of Health Policy, Management and Evaluation, and Sunnybrook Research Institute, Institute for Clinical Evaluative Sciences, Toronto; C.F. Rosen, MD, Professor, Department of Medicine, University of Toronto and Toronto Western Hospital, Toronto; R. Alhusayen, MBBS, MSCE, Assistant Professor of Medicine, University of Toronto, and Sunnybrook Research Institute, Sunnybrook Hospital, Toronto; S.Y. Cheng, MSc, Senior Research Analyst, J. Young, MSA, Senior Health Information Analyst, ICES, Toronto; W. Campbell, LLB, Patient Research Partner, Toronto Western Hospital, Toronto, Ontario; S. Bernatsky, MD, PhD, Associate Professor of Medicine, Divisions of Rheumatology and Clinical Epidemiology, Research Institute of the McGill University Health Centre, Montreal, Quebec; D.D. Gladman, MD, Professor of Medicine, University of Toronto, Senior Scientist, Krembil Research Institute, Director, Psoriatic Disease Program, University Health Network, Toronto Western Hospital, Toronto; M. Paterson, MSc, Assistant Professor, Institute of Health Policy, Management, and Evaluation, University of Toronto, and Institute for Clinical Evaluative Sciences, Toronto; K. Tu, MD, MSc, Professor of Medicine, University of Toronto, Department of Family Medicine, ICES, and Toronto Western Hospital, Toronto, Ontario, Canada. Address correspondence to Dr. Lihi Eder, Women’s College Hospital, 76 Grenville Street, Toronto, ON M5S 1B2, Canada. Email: lihi.eder@wchospital.ca. Accepted for publication October 25, 2019.
In this issue
The Journal of Rheumatology
Vol. 51, Issue 4
1 Apr 2024
Identifying and Characterizing Psoriasis and Psoriatic Arthritis Patients in Ontario Administrative Data: A Population-based Study From 1991 to 2015
Lihi Eder, Jessica Widdifield, Cheryl F. Rosen, Raed Alhusayen, Stephanie Y. Cheng, Jacqueline Young, Willemina Campbell, Sasha Bernatsky, Dafna D. Gladman, Michael Paterson, Karen Tu
The Journal of Rheumatology Feb 2020, jrheum.190659; DOI: 10.3899/jrheum.190659
Identifying and Characterizing Psoriasis and Psoriatic Arthritis Patients in Ontario Administrative Data: A Population-based Study From 1991 to 2015
Lihi Eder, Jessica Widdifield, Cheryl F. Rosen, Raed Alhusayen, Stephanie Y. Cheng, Jacqueline Young, Willemina Campbell, Sasha Bernatsky, Dafna D. Gladman, Michael Paterson, Karen Tu
The Journal of Rheumatology Feb 2020, jrheum.190659; DOI: 10.3899/jrheum.190659