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List of works by Jessica Widdifield

2442. Detection of Prosthetic Hip and Knee Joint Infections Using Administrative Databases – A Validation Study

Access to rheumatologists among patients with newly diagnosed rheumatoid arthritis in a Canadian universal public healthcare system

scientific article published on 31 January 2014

Accuracy of Canadian health administrative databases in identifying patients with rheumatoid arthritis: a validation study using the medical records of rheumatologists.

scientific article published on October 2013

Acute mental health service use is increased in rheumatoid arthritis and ankylosing spondylitis: a population-based cohort study

scientific article published on 07 June 2020

An administrative data validation study of the accuracy of algorithms for identifying rheumatoid arthritis: the influence of the reference standard on algorithm performance

scientific article

Antiphospholipid Antibody Testing in a General Population Sample from the USA: An Administrative Database Study

scientific article published on 20 February 2020

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

scientific article

Associations Between Methotrexate Use and the Risk of Cardiovascular Events in Patients with Elderly-onset Rheumatoid Arthritis

scientific article published on 01 December 2018

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

scientific article published on 15 September 2010

Causes of death in rheumatoid arthritis: How do they compare to the general population?

scientific article

Comment on: Incidence and prevalence of giant cell arteritis in Ontario, Canada: reply

scientific article published on 26 August 2020

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

scientific article published on 17 December 2010

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

scientific article

Corrigendum: Incidence and prevalence of giant cell arteritis in Ontario, Canada

scientific article published on 04 July 2020

Development and validation of an administrative data algorithm to estimate the disease burden and epidemiology of multiple sclerosis in Ontario, Canada

scientific article

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

scientific article published on 3 August 2015

Effects of hospital funding reform on wait times for hip fracture surgery: a population-based interrupted time-series analysis

scientific article published on 13 June 2021

Encounters with Rheumatologists in a Publicly Funded Canadian Healthcare System: A Population-based Study

scientific article published on 15 June 2019

Epidemiology of myasthenia gravis in Ontario, Canada

scientific article published on 27 October 2015

Feminization of the rheumatology workforce: A longitudinal evaluation of patient volumes, practice sizes and physician remuneration

scientific article published on 01 December 2020

Health Care Utilization for Musculoskeletal Issues During the Pre-diagnosis Period in Psoriatic Arthritis - A Population-Based Study

scientific article published on 21 January 2020

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

scientific article

Identification of prosthetic hip and knee joint infections using administrative databases-A validation study

scientific article published on 30 September 2020

Identifying and characterizing psoriasis and psoriatic arthritis patients in Ontario administrative data: a population-based study from 1991 to 2015

scientific article published on 15 February 2020

Incidence and prevalence of giant cell arteritis in Ontario, Canada

scientific article published on 06 April 2020

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

scientific article

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

scientific article published on 21 October 2019

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

scientific article published on 20 December 2016

Quality and continuity of information between primary care physicians and rheumatologists

scientific article published on 24 May 2019

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

scientific article published in January 2011

Rheumatoid Arthritis Surveillance in Ontario: Monitoring the Burden, Quality of Care and Patient Outcomes through Linkage of Administrative Health Data.

scientific article

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

scientific article published on 15 September 2011

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

scientific article

Serious infections in patients with myasthenia gravis: population-based cohort study

scientific article published on 17 February 2020

Systematic review and critical appraisal of validation studies to identify rheumatic diseases in health administrative databases

scientific article published on September 2013

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

scientific article published on 01 June 2019

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

scientific article

The epidemiology of rheumatoid arthritis in Ontario, Canada

scientific article published on April 2014

The rising burden of rheumatoid arthritis surpasses rheumatology supply in Ontario.

scientific article published on 31 October 2013

The risk of deliberate self-harm following a diagnosis of rheumatoid arthritis or ankylosing spondylitis: A population-based cohort study

scientific article published on 21 February 2020

Trends in Excess Mortality Among Patients With Rheumatoid Arthritis in Ontario, Canada

scientific article published on August 2015

Trends in Mortality and Cause-specific Mortality among patients with Psoriasis and Psoriatic Arthritis in Ontario, Canada

scientific article published on 20 October 2020

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

scientific article published on 11 July 2019

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

scientific article

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