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Development of the Canadian COVID-19 Emergency Department Rapid Response Network population-based registry: a
Corinne M Hohl1, Rhonda J Rosychuk2, Andrew D McRae2
1Department of Emergency Medicine (Hohl, Taylor, Andolfatto, Ting, Brar, Stachura), University of British Columbia; Centre for Clinical Epidemiology & Evaluation (Hohl), Vancouver Coastal Health Research Institute, Vancouver, BC; Department of Pediatrics (Rosychuk), University of Alberta, Edmonton, Alta.; Department of Emergency Medicine (McRae), Foothills Medical Center, Calgary, Alta.; Department of Emergency Medicine (Brooks), School of Medicine, Queen's University; Kingston Health Sciences Centre (Brooks), Kingston, Ont.; Department of Family Medicine and Emergency Medicine (Archambault), Faculty of Medicine, Université Laval; VITAM (Centre de recherche en santé durable) (Archambault, Mercier), Québec, Que.; Division of EMS (Fok, Dahn, Wiemer), Department of Emergency Medicine, Dalhousie University; Charles V. Keating Emergency and Trauma Centre (Fok, Dahn, Wiemer), QEII Health Sciences Centre, Halifax, NS; Department of Emergency Medicine (Davis), College of Medicine, University of Saskatchewan, Saskatoon, Sask.; Department of Emergency Medicine (Jelic), Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, Man.; Emergency Department (Turner), Jewish General Hospital; Department of Emergency Medicine (Turner), Faculty of Medicine and Health Sciences, McGill University, Montréal, Que.; Department of Emergency Medicine (Rowe, Hayward, Khangura), Faculty of Medicine & Dentistry, and School of Public Health (Rowe), University of Alberta, Edmonton, Alta.; Centre de recherche (Mercier), CHU de Québec, Université Laval, Québec, Que.; Sunnybrook Health Sciences Centre (Cheng, Atzema); Division of Emergency Medicine (Cheng, Landes, Vaillancourt, Morrison), Department of Medicine, Faculty of Medicine, University of Toronto, Toronto, Ont.; Emergency Department (Taylor), Royal Columbian Hospital, New Westminster, BC; Départements de médecine de famille et de médecine d'urgence (Daoust), Faculté de médecine, Université de Montréal; Hôpital du Sacré-Coeur-de-Montréal (Daoust), CIUSSS Nord-de-l'ile-de-Montréal, Montréal, Que.; Department of Emergency Medicine (Ohle), Health Sciences North; Northern Ontario School of Medicine (Ohle), Sudbury, Ont.; Lions Gate Hospital (Andolfatto, Stachura), North Vancouver, BC; ICES Central (Atzema); University Health Network (Landes), Toronto, Ont.; Department of Emergency Medicine (Lang), Cumming School of Medicine, University of Calgary; Rockyview General Hospital (Lang), Calgary, Alta.; Department of Family Practice (Martin), Faculty of Medicine, University of British Columbia, Vancouver, BC; Abbotsford Regional Hospital & Cancer Agency (Martin), Abbotsford, BC; Department of Emergency Medicine (Mohindra), North York General Hospital, North York, Ont.; Department of Emergency Medicine (Vaillancourt, Morrison), St. Michael's Hospital, Unity Health Toronto, Toronto, Ont.; Division of Emergency Medicine (Welsford), Department of Medicine, McMaster University; Hamilton Health Sciences (Welsford), Hamilton, Ont.; Surrey Memorial Hospital (Brar), Surrey, BC; Department of Emergency Medicine (Yadav, Perry), University of Ottawa; Ottawa Hospital Research Institute (Yadav, Perry), Ottawa, Ont.; Division of Emergency Medicine (Yan), Department of Medicine, London Health Sciences Centre; Schulich School of Medicine and Dentistry (Yan), Western University, London, Ont.; BC SUPPORT Unit (McGavin), Vancouver, BC corinne.hohl@ubc.ca.
Insights
This study outlines a Canadian registry collecting emergency department data for coronavirus disease 2019 (COVID-19) patients. The registry ensures high-quality data for evidence-based decision-making during the pandemic and future health emergencies.
Area of Science:
- Emergency Medicine
- Public Health
- Epidemiology
Background:
- Emergency physicians require robust evidence for managing coronavirus disease 2019 (COVID-19).
- A critical need exists for high-quality data to guide diagnostic and treatment decisions in emergency settings.
- The Canadian COVID-19 Emergency Department Rapid Response Network registry was established to address this evidence gap.
Purpose of the Study:
- To describe the methodology for collecting and ensuring data quality for a multicentre registry of COVID-19 patients in emergency departments.
- To establish a robust data collection protocol for informing clinical decision-making and public health strategies.
- To create a model for rapid data collection during public health emergencies.
Main Methods:
- A population-based registry enrolling consecutive emergency department patients with suspected or confirmed COVID-19 since March 2020.
- Data collection primarily through retrospective chart review, supplemented by 30-day phone follow-up.
- Inclusion of World Health Organization Clinical Improvement Scale, patient-reported outcomes (Veterans Rand 12-Item Health Survey), and social/cultural variables.
Main Results:
- The registry enrolled patients from 50 emergency departments across 8 Canadian provinces.
- Data collection methods were refined to ensure quality and capture comprehensive patient information.
- The registry successfully established a framework for ongoing data collection and analysis.
Conclusions:
- The Canadian COVID-19 Emergency Department Rapid Response Network registry provides a valuable resource for generating scientific evidence.
- This registry will inform clinical decision rules, disease natural history, diagnostic test evaluation, and real-world treatment/vaccine effectiveness.
- The methodology serves as a potential model for future public health emergency data collection.
Background:
Emergency physicians lack high-quality evidence for many diagnostic and treatment decisions made for patients with suspected or confirmed coronavirus disease 2019 (COVID-19). Our objective is to describe the methods used to collect and ensure the data quality of a multicentre registry of patients presenting to the emergency department with suspected or confirmed COVID-19.
Methods:
This methodology study describes a population-based registry that has been enrolling consecutive patients presenting to the emergency department with suspected or confirmed COVID-19 since Mar. 1, 2020. Most data are collected from retrospective chart review. Phone follow-up with patients at 30 days captures the World Health Organization clinical improvement scale and contextual, social and cultural variables. Phone follow-up also captures patient-reported quality of life using the Veterans Rand 12-Item Health Survey at 30 days, 60 days, 6 months and 12 months. Fifty participating emergency departments from 8 provinces in Canada currently enrol patients into the registry.
Interpretation:
Data from the registry of the Canadian COVID-19 Emergency Department Rapid Response Network will be used to derive and validate clinical decision rules to inform clinical decision-making, describe the natural history of the disease, evaluate COVID-19 diagnostic tests and establish the real-world effectiveness of treatments and vaccines, including in populations that are excluded or underrepresented in clinical trials. This registry has the potential to generate scientific evidence to inform our pandemic response, and to serve as a model for the rapid implementation of population-based data collection protocols for future public health emergencies.
Trial Registration:
Clinicaltrials.gov, no. NCT04702945.

