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Items: 32


Predictors of Treatment Failure for Hip and Knee Prosthetic Joint Infections in the Setting of 1- and 2-Stage Exchange Arthroplasty: A Multicenter Retrospective Cohort.

Kandel CE, Jenkinson R, Daneman N, Backstein D, Hansen BE, Muller MP, Katz KC, Widdifield J, Bogoch E, Ward S, Sajja A, Jeldes FG, McGeer A.

Open Forum Infect Dis. 2019 Oct 21;6(11):ofz452. doi: 10.1093/ofid/ofz452. eCollection 2019 Nov.


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. 2019 Jun 15. pii: jrheum.190034. doi: 10.3899/jrheum.190034. [Epub ahead of print]


Preventing Rheumatoid Arthritis: A Global Challenge.

Widdifield J.

Clin Ther. 2019 Jul;41(7):1355-1365. doi: 10.1016/j.clinthera.2019.04.019. Epub 2019 Jun 10.


The Effect of Triage Assessments on Identifying Inflammatory Arthritis and Reducing Rheumatology Wait Times in Ontario.

Ahluwalia V, Lineker S, Sweezie R, Bell MJ, Kendzerska T, Widdifield J, Bombardier C; Allied Health Rheumatology Triage Investigators.

J Rheumatol. 2019 Jun 1. pii: jrheum.180734. doi: 10.3899/jrheum.180734. [Epub ahead of print]


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 May 24;3:1. doi: 10.1186/s41927-019-0067-6. eCollection 2019. Erratum in: BMC Rheumatol. 2019 Aug 20;3:35.


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 ME, Bernatsky S.

J Rheumatol. 2019 May;46(5):467-474. doi: 10.3899/jrheum.180427. Epub 2018 Dec 1.


Trends in the Prevalence and Incidence of Psoriasis and Psoriatic Arthritis in Ontario, Canada: A Population-Based Study.

Eder L, Widdifield J, Rosen CF, Cook R, Lee KA, Alhusayen R, Paterson MJ, Cheng SY, Jabbari S, Campbell W, Bernatsky S, Gladman DD, Tu K.

Arthritis Care Res (Hoboken). 2019 Aug;71(8):1084-1091. doi: 10.1002/acr.23743. Epub 2019 Jul 11.


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 Dec;70(12):1748-1755. doi: 10.1002/acr.23548.


Model-based methods for case definitions from administrative health data: application to rheumatoid arthritis.

Kroeker K, Widdifield J, Muthukumarana S, Jiang D, Lix LM.

BMJ Open. 2017 Jun 23;7(6):e016173. doi: 10.1136/bmjopen-2017-016173.


Primary Care Screening and Comorbidity Management in Rheumatoid Arthritis in Ontario, Canada.

Widdifield J, Ivers NM, Bernatsky S, Jaakkimainen L, Bombardier C, Thorne JC, Ahluwalia V, Paterson JM, Young J, Wing L, Tu K.

Arthritis Care Res (Hoboken). 2017 Oct;69(10):1495-1503. doi: 10.1002/acr.23178. Epub 2017 Aug 22.


Identification of Physician-Diagnosed Alzheimer's Disease and Related Dementias in Population-Based Administrative Data: A Validation Study Using Family Physicians' Electronic Medical Records.

Jaakkimainen RL, Bronskill SE, Tierney MC, Herrmann N, Green D, Young J, Ivers N, Butt D, Widdifield J, Tu K.

J Alzheimers Dis. 2016 Aug 10;54(1):337-49. doi: 10.3233/JAD-160105.


Wait times to rheumatology care for patients with rheumatic diseases: a data linkage study of primary care electronic medical records and administrative data.

Widdifield J, Bernatsky S, Thorne JC, Bombardier C, Jaakkimainen RL, Wing L, Paterson JM, Ivers N, Butt D, Lyddiatt A, Hofstetter C, Ahluwalia V, Tu K.

CMAJ Open. 2016 May 11;4(2):E205-12. doi: 10.9778/cmajo.20150116. eCollection 2016 Apr-Jun.


Patterns of Care Among Patients Referred to Rheumatologists in Ontario, Canada.

Widdifield J, Tu K, Carter Thorne J, Bombardier C, Michael Paterson J, Liisa Jaakkimainen R, Wing L, Butt DA, Ivers N, Hofstetter C, Lyddiatt A, Ahluwalia V, Bernatsky S.

Arthritis Care Res (Hoboken). 2017 Jan;69(1):104-114. doi: 10.1002/acr.22910. Epub 2016 Nov 16.


The Longterm Effect of Early Intensive Treatment of Seniors with Rheumatoid Arthritis: A Comparison of 2 Population-based Cohort Studies on Time to Joint Replacement Surgery.

Widdifield J, Moura CS, Wang Y, Abrahamowicz M, Paterson JM, Huang A, Beauchamp ME, Boire G, Fortin PR, Bessette L, Bombardier C, Hanly JG, Feldman D, Bernatsky S; CAnadian Network for Advanced Interdisciplinary Methods for comparative effectiveness research (CAN-AIM).

J Rheumatol. 2016 May;43(5):861-8. doi: 10.3899/jrheum.151156. Epub 2016 Feb 15.


Epidemiology of myasthenia gravis in Ontario, Canada.

Breiner A, Widdifield J, Katzberg HD, Barnett C, Bril V, Tu K.

Neuromuscul Disord. 2016 Jan;26(1):41-6. doi: 10.1016/j.nmd.2015.10.009. Epub 2015 Oct 27.


Are family physicians comprehensively using electronic medical records such that the data can be used for secondary purposes? A Canadian perspective.

Tu K, Widdifield J, Young J, Oud W, Ivers NM, Butt DA, Leaver CA, Jaakkimainen L.

BMC Med Inform Decis Mak. 2015 Aug 13;15:67. doi: 10.1186/s12911-015-0195-x.


Early medication use in new-onset rheumatoid arthritis may delay joint replacement: results of a large population-based study.

Moura CS, Abrahamowicz M, Beauchamp ME, Lacaille D, Wang Y, Boire G, Fortin PR, Bessette L, Bombardier C, Widdifield J, Hanly JG, Feldman D, Maksymowych W, Peschken C, Barnabe C, Edworthy S, Bernatsky S; CAN-AIM.

Arthritis Res Ther. 2015 Aug 3;17:197. doi: 10.1186/s13075-015-0713-3.


Connective tissue diseases: The burden of serious infections in SLE.

Widdifield J, Bernatsky S.

Nat Rev Rheumatol. 2015 Jun;11(6):326-7. doi: 10.1038/nrrheum.2015.55. Epub 2015 Apr 21. No abstract available.


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 Aug;67(8):1047-53. doi: 10.1002/acr.22553.


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 Jul;21(8):1045-54. doi: 10.1177/1352458514556303. 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 Jun 23;15:216. doi: 10.1186/1471-2474-15-216.


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 Apr;66(4):786-93. doi: 10.1002/art.38306.


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 Oct 31;104(7):e450-5.


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 Jan 31;4(1):e003888. doi: 10.1136/bmjopen-2013-003888.


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 (Hoboken). 2013 Oct;65(10):1582-91. doi: 10.1002/acr.22031.


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 Sep;65(9):1490-503. doi: 10.1002/acr.21993. Review.


Serious infections in a population-based cohort of 86,039 seniors with rheumatoid arthritis.

Widdifield J, Bernatsky S, Paterson JM, Gunraj N, Thorne JC, Pope J, Cividino A, Bombardier C.

Arthritis Care Res (Hoboken). 2013 Mar;65(3):353-61. doi: 10.1002/acr.21812.


Rheumatoid arthritis disease severity indices in administrative databases: a systematic review.

Vinet E, Kuriya B, Widdifield J, Bernatsky S.

J Rheumatol. 2011 Nov;38(11):2318-25. doi: 10.3899/jrheum.110587. Epub 2011 Sep 15. Review.


Comparison of anti-TNF treatment initiation in rheumatoid arthritis databases demonstrates wide country variability in patient parameters at initiation of anti-TNF therapy.

Pease C, Pope JE, Truong D, Bombardier C, Widdifield J, Thorne JC, Paul Haraoui B, Psaradellis E, Sampalis J, Bonner A.

Semin Arthritis Rheum. 2011 Aug;41(1):81-9. doi: 10.1016/j.semarthrit.2010.09.004. Epub 2010 Dec 17.


Canadian variation by province in rheumatoid arthritis initiating anti-tumor necrosis factor therapy: results from the optimization of adalimumab trial.

Pease C, Pope JE, Thorne C, Haraoui BP, Truong D, Bombardier C, Widdifield J, Psaradellis E, Sampalis JS, Bonner A.

J Rheumatol. 2010 Dec;37(12):2469-74. doi: 10.3899/jrheum.091447. Epub 2010 Sep 15.


Quality care in seniors with new-onset rheumatoid arthritis: a Canadian perspective.

Widdifield J, Bernatsky S, Paterson JM, Thorne JC, Cividino A, Pope J, Gunraj N, Bombardier C.

Arthritis Care Res (Hoboken). 2011 Jan;63(1):53-7. doi: 10.1002/acr.20304.

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