Accuracy of Self-Reported COVID-19 Vaccination Status Compared With a Public Health Vaccination Registry in Québec: Observational Diagnostic Study

Patrick M Archambault   ^{1, 2, 3, 4} , MSc, MD ;   Rhonda J Rosychuk   ⁵ , PhD ;   Martyne Audet   ² , MSc ;   Rajan Bola   ⁶ , MSc ;   Shabnam Vatanpour   ⁷ , PhD ;   Steven C Brooks   ⁸ , MHSc, MD ;   Raoul Daoust   ⁹ , MSc, MD ;   Gregory Clark   ¹⁰ , MD ;   Lars Grant   ^{10, 11} , MD, PhD ;   Samuel Vaillancourt   ^{12, 13} , MPH, MD ;   Michelle Welsford   ¹⁴ , MD ;   Laurie J Morrison   ^{15, 16} , MSc, MD ;   Corinne M Hohl   ⁶ , MHSc, MD ;   Canadian COVID-19 Emergency Department Rapid Response Network (CCEDRRN) investigators   ¹⁷ ;   Network of Canadian Emergency Researchers   ¹⁸ ;   Canadian Critical Care Trials Group   ¹⁹

¹ Department of Family Medicine and Emergency Medicine, Université Laval, Québec, QC, Canada

² Centre de recherche intégrée pour un système de santé apprenant en santé et services sociaux, Centre intégré de santé et services sociaux de Chaudière-Appalaches, Lévis, QC, Canada

³ VITAM - Centre de recherche en santé durable, Québec, QC, Canada

⁴ Department of Anesthesiology and Intensive Care, Université Laval, Québec, QC, Canada

⁵ Department of Pediatrics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, AB, Canada

⁶ Department of Emergency Medicine, Faculty of Medicine, University of British Columbia, Vancouver, BC, Canada

⁷ Center for Health Informatics, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada

⁸ Department of Emergency Medicine, Queen's University, Kingston, ON, Canada

⁹ Department of Family Medicine and Emergency Medicine, Université de Montréal, Montréal, QC, Canada

¹⁰ Department of Emergency Medicine, Faculty of Medicine, McGill University, Montréal, QC, Canada

¹¹ Lady Davis Institute for Medical Research, Jewish General Hospital, Montréal, QC, Canada

¹² Department of Emergency Medicine, Li Ka Shing Knowledge Institute, St Michael's Hospital, Unity Health Toronto, Toronto, ON, Canada

¹³ Department of Medicine, University of Toronto, Toronto, ON, Canada

¹⁴ Division of Emergency Medicine, Department of Medicine, McMaster University, Hamilton, ON, Canada

¹⁵ Division of Emergency Medicine, Department of Medicine, University of Toronto, Toronto, ON, Canada

¹⁶ Department of Emergency Services, Sunnybrook Health Sciences Centre, Toronto, ON, Canada

¹⁷ University of British Columbia, Vancouver, BC, Canada

¹⁸ Canadian Association of Emergency Physicians, Ottawa, ON, Canada

¹⁹ Canadian Critical Care Trials Group, Toronto, ON, Canada