Evidence map›Paper›PMID 37160325›Full record

ArticleCMAJ open

Association between the COVID-19 pandemic and first cancer treatment modality: a population-based cohort study.

Rui Fu, Rinku Sutradhar, Qing Li, Timothy P Hanna, Kelvin K W Chan, Jonathan C Irish, Natalie Coburn, Julie Hallet, Anna Dare, Simron Singh and 13 more

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 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
0.5field-weighted citation impact, top 28% 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

1 citing paper in PubMed, 2 citations in OpenAlex.

  1. Article
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

23 authors at 1 institution in 1 country.

Rui FuICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Rinku SutradharICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Qing LiICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Timothy P HannaICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Kelvin K W ChanICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Jonathan C IrishICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Natalie CoburnICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Julie HalletICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Anna DareICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Simron SinghICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Ambica ParmarICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Craig C EarleICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Lauren Lapointe-ShawICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Monika K KrzyzanowskaICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Antonio FinelliICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Alexander V LouieICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Nicole J Look HongICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Ian J WitterickICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Alyson MaharICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
David R UrbachICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Daniel I McIsaacICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Danny EnepekidesICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont.
Antoine EskanderICES (Fu, Sutradhar, Li, Coburn, Hallet, Dare, Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Urbach, McIsaac, Eskander); Institute of Health Policy, Management and Evaluation (Fu, Sutradhar, Chan, Irish, Coburn, Hallet, Dare, Singh, Lapointe-Shaw, Krzyzanowska, Finelli, Hong, Eskander) and Department of Otolaryngology - Head and Neck Surgery (Fu, Witterick, Enepekides, Eskander), University of Toronto, Toronto, Ont.; Division of Cancer Care and Epidemiology (Hanna), Cancer Research Institute, Queen's University, Kingston, Ont.; Ontario Institute for Cancer Research (Hanna); Odette Cancer Centre (Chan, Hallet), Sunnybrook Health Sciences Centre; Ontario Health (Chan, Coburn, Witterick) - Cancer Care Ontario; Department of Otolaryngology - Head and Neck Surgery (Irish, Witterick), University of Toronto, Princess Margaret Cancer Centre; Department of Surgery (Coburn, Hallet, Dare, Finelli, Hong) and Department of Medicine (Singh, Parmar, Earle, Lapointe-Shaw, Krzyzanowska), University of Toronto; Department of Radiation Oncology (Louie), University of Toronto, Toronto, Ont.; Department of Community Health Sciences (Mahar), University of Manitoba, Winnipeg, Man.; Department of Surgery (Urbach), Women's College Hospital, Toronto, Ont.; Department of Anesthesiology and Pain Medicine (McIsaac), The Ottawa Hospital, Ottawa, Ont. antoine.eskander@mail.utoronto.ca.
Mammal Research Institute · PL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPhysicians were directed to prioritize using nonsurgical cancer treatment at the beginning of the COVID-19 pandemic. We sought to quantify the impact of this policy on the modality of first cancer treatment (surgery, chemotherapy, radiotherapy or no treatment).

methodsIn this population-based study using Ontario data from linked administrative databases, we identified adults diagnosed with cancer from January 2016 to November 2020 and their first cancer treatment received within 1 year postdiagnosis. Segmented Poisson regressions were applied to each modality to estimate the change in mean 1-year recipient volume per thousand patients (rate) at the start of the pandemic (the week of Mar. 15, 2020) and change in the weekly trend in rate during the pandemic (Mar. 15, 2020, to Nov. 7, 2020) relative to before the pandemic (Jan. 3, 2016, to Mar. 14, 2020).

resultsWe included 321 535 people diagnosed with cancer. During the first week of the COVID-19 pandemic, the mean rate of receiving upfront surgery over the next year declined by 9% (rate ratio 0.91, 95% confidence interval [CI] 0.88-0.95), and chemotherapy and radiotherapy rates rose by 30% (rate ratio 1.30, 95% CI 1.23-1.36) and 13% (rate ratio 1.13, 95% CI 1.07-1.19), respectively. Subsequently, the 1-year rate of upfront surgery increased at 0.4% for each week (rate ratio 1.004, 95% CI 1.002-1.006), and chemotherapy and radiotherapy rates decreased by 0.9% (rate ratio 0.991, 95% CI 0.989-0.994) and 0.4% (rate ratio 0.996, 95% CI 0.994-0.998), respectively, per week. Rates of each modality resumed to prepandemic levels at 24-31 weeks into the pandemic.

interpretationAn immediate and sustained increase in use of nonsurgical therapy as the first cancer treatment occurred during the first 8 months of the COVID-19 pandemic in Ontario. Further research is needed to understand the consequences.

Indexed as

COVID-19NeoplasmsAdultCohort StudiesDatabases, FactualHumansOntarioPandemics

Identifiers

PMID37160325
PMCPMC10174267
OpenAlexW4376133034

What OpenQuestion holds

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LicenceCC BY-NC-ND
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