Frequency of repeat antinuclear antibody testing in Ontario: a population-based descriptive study
Lake S, Yao Z, Gakhal N, Steiman A, Hawker G, Widdifield J. CMAJ Open. 2020; 8(1):E184-90. Epub 2020 Mar 16.
Publications
The risk of deliberate self-harm following a diagnosis of rheumatoid arthritis or ankylosing spondylitis: a population-based cohort study
Kuriya B, Vigod S, Luo J, Widdifield J, Haroon N. PLoS One. 2020; 15(2):e0229273. Epub 2020; Feb 21.
Identifying and characterizing psoriasis and psoriatic arthritis patients in Ontario administrative data: a population-based study from 1991 to 2015
Eder L, Widdifield J, Rosen CF, Alhusayen R, Cheng SY, Young J, Campbell W, Bernatsky S, Gladman DD, Paterson JM, Tu K. J Rheumatol. 2020; 47(11):1644-51. Epub 2020 Feb 15.
Serious infections in patients with myasthenia gravis: population-based cohort study
Kassardjian CD, Widdifield J, Paterson JM, Kopp A, Nagamuthu C, Barnett C, Tu K, Breiner A. Eur J Neurol. 2020; 27(4):702-8. Epub 2020 Jan 29.
Healthcare utilization for musculoskeletal issues during the prediagnosis period in psoriatic arthritis: a population-based study
Eder L, Tu K, Rosen CF, Alhusayen R, Cheng SY, Young J, Campbell W, Bernatsky S, Gladman DD, Paterson JM, Widdifield J. Arthritis Care Res (Hoboken). 2021; 73(5):680-6. Epub 2020 Jan 21.
Encounters with rheumatologists in a publicly funded Canadian healthcare system: a population-based study
Widdifield J, Bernatsky S, Pope JE, Ahluwalia V, Barber CEH, Eder L, Kuriya B, Ling V, Paterson JM, Thorne JC. J Rheumatol. 2020; 47(3):468-76. Epub 2019 Jun 1.
Quality and continuity of information between primary care physicians and rheumatologists
Wong J, Tu K, Bernatsky S, Jaakkimainen L, Thorne JC, Ahluwalia V, Paterson JM, Widdifield J. BMC Rheumatol. 2019; 3:1. Epub 2019 May 24.
Associations between methotrexate use and the risk of cardiovascular events in patients with elderly-onset rheumatoid arthritis
Widdifield J, Abrahamowicz M, Paterson JM, Huang A, Thorne JC, Pope JE, Kuriya B, Beauchamp M, Bernatsky S. J Rheumatol. 2019; 46(5):467-74. Epub 2018 Dec 1.
Causes of death in rheumatoid arthritis: how do they compare to the general population?
Widdifield J, Paterson JM, Huang A, Bernatsky S. Arthritis Care Res (Hoboken). 2018; 70(12):1748-55. Epub 2018 Mar 7.
Primary care screening and comorbidity management in rheumatoid arthritis in Ontario, Canada
Widdifield J, Ivers NM, Bernatsky S, Jaakkimainen RL, Bombardier C, Thorne JC, Ahluwalia V, Paterson JM, Young J, Wing L, Tu K. Arthritis Care Res (Hoboken). 2017; 69(10):1495-1503. Epub 2016 Dec 20.