Jessica Widdifield

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

R. Liisa Jaakkimainen, Susan E. Bronskill, Mary C. Tierney et al. · Journal of Alzheimer s Disease · 2016 · 305 citations

Medicine, Family Medicine, Health Informatics +16

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

Jessica Widdifield, Sasha Bernatsky, J. Michael Paterson et al. · Arthritis Care & Research · 2012 · 218 citations

Medicine, Infectious Diseases, Internal Medicine +17

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

Jessica Widdifield, Claire Bombardier, Sasha Bernatsky et al. · BMC Musculoskeletal Disorders · 2014 · 163 citations · Full text

Computing, Biomedical Informatics, Health Informatics +13

Accuracy of Canadian Health Administrative Databases in Identifying Patients With Rheumatoid Arthritis: A Validation Study Using the Medical Records of Rheumatologists

Jessica Widdifield, Sasha Bernatsky, J. Michael Paterson et al. · Arthritis Care & Research · 2013 · 159 citations

Medicine, Biomedical Informatics, Health Informatics +15

Epidemiology of myasthenia gravis in Ontario, Canada

Ari Breiner, Jessica Widdifield, Hans Katzberg et al. · Neuromuscular Disorders · 2015 · 131 citations

Medicine, Endocrinology, Health Sciences +9