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Karen Tu

university of toronto

61H-index
384Paper Count
1.3WCitation Count
Published Papers 135
Publication Date
Comparing regular expression and machine learning approaches to predict immigrant status from primary care electronic medical record data in Ontario, Canada
err2026-04-17
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PREAI
errGaries, Stephanie; Meaney, Christopher; Weyman, Karen; Bloch, Gary; Gronsbell, Jessica; Vahidi-Williams, Nassim; Wang, Ri; Crampton, Noah; Tu, Karen; Pinto, Andrew D.
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Development and validation of a case identification algorithm for hand trauma patients using health administrative data and the epidemiology of hand trauma in a universal healthcare system
err2025-12-12
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errOAAI
errWong, Chloe R.; Tu, Karen; Hernandez, Alejandro; Urbach, David R.; Witiw, Christopher; Hansen, Bettina; Ko, Alice; Tsai, Pascale; Baltzer, Heather
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Gaps in immunization coverage at school entry and after two years of school attendance among immigrant and refugee children in Ontario, Canada
err2025-09-09
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errOAAI
errWilson, Sarah E.; Chambers, Catharine; Wilton, Andrew S.; Bai, Li; Crowcroft, Natasha; Deeks, Shelley L.; Halperin, Scott A.; Kwong, Jeffrey C.; Rashid, Meb; Tu, Karen; Wilson, Kumanan; Guttmann, Astrid
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SARS-CoV-2 vaccination for individuals with schizophrenia in Ontario, Canada: A retrospective cohort study
err2025-05-22
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PREAI
errCatherine Ji; Karen Tu; John Wang; Debra A. Butt; Andrea S. Gershon; Jessica Gronsbell; Anthony D. Train; Braden O'Neill
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Severe Outcomes and Length of Stay Among People With Schizophrenia Hospitalized for COVID-19: A Population-Based Retrospective Cohort Study
err2025-05-01
err0
errOAAI
errGronsbell, Jessica; Wang, John; Thurston, Hilary; Gao, Jianhui; Shi, Yaqi; Train, Anthony D.; Butt, Debra; Gershon, Andrea; O'Neill, Braden; Tu, Karen
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Weight status of children and adolescents with autism spectrum disorder: A cross-sectional analysis of primary care electronic medical records and linked health administrative datasets in Ontario, Canada
err2025-03-18
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errOAAI
errKinlin, Laura M.; Saunders, Natasha R.; Carsley, Sarah; Keown-Stoneman, Charles; Tu, Karen; Zwaigenbaum, Lonnie; Birken, Catherine S.
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Impact of the COVID-19 pandemic on routine immunization coverage of children and teenagers in Ontario, Canada
errVACCINE
IF3.5
err2025-03-01
err0
errOAAI
errJi, Catherine; Senthinathan, Arrani; Apajee, Jemisha; Dubey, Vinita; Forte, Milena; Kwong, Jeffrey C.; Morris, Shaun K.; Piche-Renaud, Pierre-Philippe; Wilson, Sarah E.; Tu, Karen
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Association between maternal schizophrenia and risk of serious asthma exacerbations in childhood
err2025-01-01
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PREAI
errPouget, J. G.; Cohen, E.; Ray, J. G.; Wilton, A. S.; Brown, H. K.; Saunders, N. R.; Dennis, C. L.; Holloway, A. C.; Morrison, K. M.; Hanley, G. E.; Oberlander, T. F.; Berard, A.; Tu, K.; Barker, L. C.; Vigod, S. N.
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Cancer screening among people with schizophrenia before and after the COVID-19 pandemic in Ontario, Canada: Retrospective cohort study
err2025-01-01
err0
PREAI
errO'Neill, Braden; Wang, John; Gronsbell, Jessica; Butt, Debra; Train, Anthony; Ortigoza, Angela; Seaton, Bianca; Gershon, Andrea; Tu, Karen
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Comparative effectiveness and safety of apixaban and rivaroxaban in older patients with atrial fibrillation: A population-based cohort study
err2024-12-01
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PREAI
errShurrab, Mohammed; Austin, Peter C.; Jackevicius, Cynthia A.; Tu, Karen; Qiu, Feng; Haldenby, Olivia; Middleton, Allan; Turakhia, Mintu P.; Lopes, Renato D.; Boden, William E.; Castellucci, Lana A.; Heidenreich, Paul A.; Healey, Jeff S.; Ko, Dennis T.
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Implications of five different risk models in primary prevention guidelines
err2024-10-28
err0
PREAI
errSud, M.; Sivaswamy, A.; Austin, P.; Abdel-Qadir, H.; Anderson, T.; Naimark, D.; Lee, D.; Roifman, I.; Thanassoulis, G.; Tu, K.; Wijeysundera, H.; Ko, D.
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Anticoagulation and stroke in hospitalized patients newly diagnosed with secondary atrial fibrillation: a population-based cohort study
err2024-10-28
err0
PREAI
errAbdel-Qadir, H.; Gunn, M.; Fang, J.; Odugbemi, T.; Austin, P.; Dorian, P.; Jackevicius, C.; Lee, D.; Singh, S.; Tu, K.; Ko, D.
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Changes in primary care visits for respiratory illness during the COVID-19 pandemic: a multinational study by the International Consortium of Primary Care Big Data Researchers (INTRePID)
err2024-06-17
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errOAAI
errWestfall, John M.; Bonilla, Angela Ortigoza; Lapadula, Maria C.; Zingoni, Paula L.; Wong, William C. W.; Wensaas, Knut A.; Pace, Wilson D.; Silva-Valencia, Javier; Scattini, Luciano F.; Ng, Amy P. P.; Manski-Nankervis, Jo-Anne; Ling, Zheng J.; Li, Zhuo; Heald, Adrian H.; Laughlin, Adrian; Kristiansson, Robert S.; Hallinan, Christine M.; Goh, Lay H.; Gaona, Gabriela; Flottorp, Signe; de Lusignan, Simon; Cuba-Fuentes, Maria S.; Baste, Valborg; Tu, Karen
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Implications of five different risk models in primary prevention guidelines
err2024-05-11
err1
PREAI
errSud, Maneesh; Sivaswamy, Atul; Austin, Peter C.; Abdel-Qadir, Husam; Anderson, Todd J.; Naimark, David M. J.; Lee, Douglas S.; Roifman, Idan; Thanassoulis, George; Tu, Karen; Wijeysundera, Harindra C.; Ko, Dennis T.
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Time to SGLT2 Inhibitors Initiation in Patients With Heart Failure
err2024-04-16
err0
errOAAI
errMoon, Jungyeon; Udell, Jacob A.; Chong, Alice; Fang, Jiming; Austin, Peter C.; Ko, Dennis T.; Stukel, Therese A.; Atzema, Clare L.; Booth, Gillian L.; Tu, Karen; Naimark, David M. J.; Jackevicius, Cynthia A.
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Effect of the COVID-19 pandemic on mental health visits in primary care: an interrupted time series analysis from nine INTRePID countries
err2024-04-01
err4
errOAAI
errSilva-Valencia, Javier; Lapadula, Carla; Westfall, John M.; Gaona, Gabriela; de Lusignan, Simon; Kristiansson, Robert Sarkadi; Ling, Zheng Jye; Goh, Lay Hoon; Soto-Becerra, Percy; Cuba-Fuentes, Maria Sofia; Wensaas, Knut -Arne; Flottorp, Signe; Baste, Valborg; Wong, William Chi-Wai; Ng, Amy Pui Pui; Ortigoza, Angela; Manski-Nankervis, Jo -Anne; Hallinan, Christine Mary; Zingoni, Paula; Scattini, Luciano; Heald, Adrian; Tu, Karen
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Association of neighbourhood-level material deprivation with adverse outcomes and processes of care among patients with heart failure in a single-payer healthcare system: A population-based cohort study
err2023-12-20
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errOAAI
errBobrowski, David; Dorovenis, Andrew; Abdel-Qadir, Husam; Mcnaughton, Candace D.; Alonzo, Rea; Fang, Jiming; Austin, Peter C.; Udell, Jacob A.; Jackevicius, Cynthia A.; Alter, David A.; Atzema, Clare L.; Bhatia, R. Sacha; Booth, Gillian L.; Ha, Andrew C. T.; Johnston, Sharon; Dhalla, Irfan; Kapral, Moira K.; Krumholz, Harlan M.; Roifman, Idan; Wijeysundera, Harindra C.; Ko, Dennis T.; Tu, Karen; Ross, Heather J.; Schull, Michael J.; Lee, Douglas S.
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Association of Neighborhood-Level Marginalization With Health Care Use and Clinical Outcomes Following Hospital Discharge in Patients Who Underwent Coronary Catheterization for Acute Myocardial Infarction in a Single-Payer Health Care System
err2023-12-01
err1
PREAI
errAkioyamen, Leo E.; Abdel-Qadir, Husam; Han, Lu; Sud, Maneesh; Mistry, Nikhil; Alter, David A.; Atzema, Clare L.; Austin, Peter C.; Bhatia, R. Sacha; Booth, Gillian L.; Dhalla, Irfan; Ha, Andrew C. T.; Jackevicius, Cynthia A.; Kapral, Moira K.; Krumholz, Harlan M.; Lee, Douglas S.; McNaughton, Candace D.; Roifman, Idan; Schull, Michael J.; Sivaswamy, Atul; Tu, Karen; Udell, Jacob A.; Wijeysundera, Harindra C.; Ko, Dennis T.
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