Rheumatoid arthritis surveillance in Ontario: monitoring the burden, quality of care and patient outcomes through linkage of administrative health data
Widdifield J, Bernatsky S, Bombardier C, Paterson M. Healthc Q. 2015; 18(3):7-10.
Publications
Trends in excess mortality among patients with rheumatoid arthritis in Ontario, Canada
Widdifield J, Bernatsky S, Paterson JM, Tomlinson G, Tu K, Kuriya B, Thorne JC, Pope JE, Hollands S, Bombardier C. Arthritis Care Res (Hoboken). 2015; 67(8):1047-53. Epub 2015 Jan 26.
Development and validation of an administrative data algorithm to estimate the disease burden and epidemiology of multiple sclerosis in Ontario, Canada
Widdifield J, Ivers NM, Young J, Green D, Jaakkimainen L, Butt DA, O'Connor P, Hollands S, Tu K. Mult Scler. 2015; 21(8):1045-54. Epub 2014 Nov 12.
An administrative data validation study of the accuracy of algorithms for identifying rheumatoid arthritis: the influence of the reference standard on algorithm performance
Widdifield J, Bombardier C, Bernatsky S, Paterson JM, Green D, Young J, Ivers N, Butt DA, Jaakkimainen RL, Thorne JC, Tu K. BMC Musculoskelet Disord. 2014; 15:216.
The rising burden of rheumatoid arthritis surpasses rheumatology supply in Ontario
Widdifield J, Paterson JM, Bernatsky S, Tu K, Thorne JC, Ahluwalia V, Ivers N, Butt D, Jaakkimainen RL, Tomlinson G, Bombardier C. Can J Public Health. 2013; 104(7):450-5. Epub 2013 Oct 31.
Access to rheumatologists among patients with newly diagnosed rheumatoid arthritis in a Canadian universal public healthcare system
Widdifield J, Paterson JM, Bernatsky S, Tu K, Thorne JC, Ivers N, Butt D, Jaakkimainen RL, Gunraj N, Ahluwalia V, Bombardier C. BMJ Open. 2014; 4:e003888.
The epidemiology of rheumatoid arthritis in Ontario, Canada
Widdifield J, Paterson JM, Bernatsky S, Tu K, Tomlinson G, Kuriya B, Thorne JC, Bombardier C. Arthritis Rheumatol. 2014; 66(4):786-93. Epub 2014 Mar 1.
Accuracy of Canadian health administrative databases in identifying patients with rheumatoid arthritis: a validation study using the medical records of rheumatologists
Widdifield J, Bernatsky S, Paterson JM, Tu K, Ng R, Thorne JC, Pope JE, Bombardier C. Arthritis Care Res. 2013; 65(10):1582-91. Epub 2013 Sep 24.
A systematic review and critical appraisal of validation studies to identify rheumatic diseases in health administrative databases
Widdifield J, Labrecque J, Lix L, Paterson JM, Bernatsky S, Tu K, Ivers N, Bombardier C. Arthritis Care Res (Hoboken). 2013; 65(9):1490-503. Epub 2017 Aug 26.
Serious infections in a population-based cohort of 86,039 seniors with rheumatoid arthritis
Widdifield J, Bernatsky S, Paterson MJ, Gunraj N, Thorne JC, Pope J, Cividino A, Bombardier C. Arthritis Care Res. 2013; 65(3):353-61. Epub 2013 Feb 26.