Evidence map›Paper›PMID 35853660›Full record

ArticleCMAJ open

SARS-CoV-2 testing, infection and outcomes among Ontario physicians: a descriptive population-based cohort study.

Cheng-Wei Liu, Nivethika Jeyakumar, Eric McArthur, Jessica M Sontrop, Daniel T Myran, Kevin L Schwartz, Manish M Sood, Peter Tanuseputro, Amit X Garg

Open access · diamondAbstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in CMAJ open. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
0.4field-weighted citation impact, top 37% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

3 citing papers in PubMed, 4 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 1 institution in 1 country.

Cheng-Wei LiuICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Nivethika JeyakumarICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Eric McArthurICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Jessica M SontropICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Daniel T MyranICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Kevin L SchwartzICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Manish M SoodICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Peter TanuseputroICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont.
Amit X GargICES Jeyakumar, McArthur, Garg, Myran, Sood, Tanuseputro, Schwartz, Ont.; Department of Medicine (Liu, Garg), Western University, London, Ont.; Department of Epidemiology & Biostatistics (Sontrop, Garg), Western University, London, Ont.; Clinical Epidemiology Program (Myran, Sood, Tanuseputro), Ottawa Hospital Research Institute, Ottawa, Ont.; Public Health Ontario (Schwartz); Dalla Lana School of Public Health (Schwartz), University of Toronto, Toronto, Ont.; Department of Medicine (Sood, Tanuseputro) and Department of Family Medicine (Myran), University of Ottawa, Ottawa, Ont. amit.garg@lhsc.on.ca.
Public Health Ontario · CA

Funding

CIHR
6 · The paper itself

Abstract

backgroundHealth care workers have a higher risk of acquiring SARS-CoV-2 infection than the general population. Our study reports on SARS-CoV-2 testing, infection and associated outcomes in Ontario physicians before SARS-CoV-2 vaccination became available on Dec. 14, 2020.

methodsWe conducted a descriptive, population-based cohort study of physicians in Ontario, Canada, from Jan. 25 to Dec. 31, 2020. We included physicians and postgraduate medical trainees who were residents of Ontario and registrants with the College of Physicians and Surgeons of Ontario during the study period. We examined the proportion of physicians tested for SARS-CoV-2 infection, the proportion who tested positive, and how testing and infections varied by certain physician characteristics. We reported on clinical outcomes associated with infection, including hospital admission and death.

resultsOf 41 208 physicians (mean age 47 yr; 56.1% male), 19 116 (46.4%) were tested at least once for SARS-CoV-2 infection; 358 tested positive (0.9%). No physicians died within 30 days of testing positive; however, 20/358 (5.6%) were admitted to hospital. By specialty, the proportion tested was highest among postgraduate medical trainees (2531/4125 [61.4%]), emergency physicians (281/478 [58.8%]), infectious disease physicians (33/67 [49.3%]) and family physicians (8857/18 553 [47.7%]). The proportion who tested positive was highest among internal medicine physicians (44/3499 [1.3%]), postgraduate medical trainees (47/4125 [1.1%]) and family physicians (171/18 553 [0.9%]). Of 2290 physicians who worked in long-term care, 1636 (71.4%) were tested and 25 (1.1%) tested positive.

interpretationDuring the prevaccination period of the COVID-19 pandemic in Ontario, nearly half of all physicians in the province were tested at least once for SARS-CoV-2 infection, 0.9% tested positive and none died. These findings may reflect the public health measures that were implemented in the province during this period.

Indexed as

COVID-19SARS-CoV-2Cohort StudiesCOVID-19 TestingCOVID-19 VaccinesFemaleHumansMaleMiddle AgedOntarioPandemicsCOVID-19 Vaccines

Identifiers

PMID35853660
PMCPMC9313000
OpenAlexW4286210814

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.