{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,30]],"date-time":"2026-01-30T09:09:15Z","timestamp":1769764155852,"version":"3.49.0"},"reference-count":13,"publisher":"Oxford University Press (OUP)","issue":"5","license":[{"start":{"date-parts":[[2022,8,18]],"date-time":"2022-08-18T00:00:00Z","timestamp":1660780800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"name":"Sunnybrook Research Institute and Sunnybrook Foundation COVID-19 Response"},{"name":"Grant and a Canadian Institutes of Health Research Operating","award":["#179892"],"award-info":[{"award-number":["#179892"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2022,9,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>COVID-19 has had a detrimental effect on the provision of cancer surgery, but its impact beyond the first 6\u2009months of the pandemic remains unclear. We used data on 799\u200a220 cancer surgeries performed in Ontario, Canada, during 2018-2021 and segmented regression to address this knowledge gap. With the arrival of the first COVID-19 wave (March 2020), mean cancer surgical volume decreased by 57%. Surgical volume then rose by 2.5% weekly and reached prepandemic levels in 8\u2009months. The surgical backlog after the first wave was 47\u200a639 cases. At the beginning of the second COVID-19 wave (January 2021), mean cancer surgical volume dropped by 22%. Afterward, surgical volume did not actively recover (2-sided P =\u2009.25), resulting in a cumulative backlog of 66\u200a376 cases as of August 2021. These data urge the strengthening of the surgical system to quickly clear the backlog in anticipation of a tsunami of newly diagnosed cancer patients in need of surgery.<\/jats:p>","DOI":"10.1093\/jncics\/pkac062","type":"journal-article","created":{"date-parts":[[2022,8,18]],"date-time":"2022-08-18T12:48:56Z","timestamp":1660826936000},"source":"Crossref","is-referenced-by-count":8,"title":["The Changing Face of Cancer Surgery During Multiple Waves of COVID-19"],"prefix":"10.1093","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0577-2830","authenticated-orcid":false,"given":"Rui","family":"Fu","sequence":"first","affiliation":[{"name":"ICES , Toronto, ON, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto , Toronto, ON, Canada"},{"name":"Department of Otolaryngology\u2013Head and Neck Surgery, Michael Garron Hospital and Sunnybrook Health Sciences Centre, University of Toronto , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pabiththa","family":"Kamalraj","sequence":"additional","affiliation":[{"name":"Department of Otolaryngology\u2013Head and Neck Surgery, Michael Garron Hospital and Sunnybrook Health Sciences Centre, University of Toronto , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Qing","family":"Li","sequence":"additional","affiliation":[{"name":"ICES , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Julie","family":"Hallet","sequence":"additional","affiliation":[{"name":"ICES , Toronto, ON, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto , Toronto, ON, Canada"},{"name":"Odette Cancer Centre\u2013Sunnybrook Health Sciences Centre , Toronto, ON, Canada"},{"name":"Department of Surgery, Faculty of Medicine, University of Toronto , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"David","family":"Gomez","sequence":"additional","affiliation":[{"name":"ICES , Toronto, ON, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto , Toronto, ON, Canada"},{"name":"Department of Surgery, Faculty of Medicine, University of Toronto , Toronto, ON, Canada"},{"name":"Division of General Surgery, St. Michael\u2019s Hospital, Unity Health Toronto , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Rinku","family":"Sutradhar","sequence":"additional","affiliation":[{"name":"ICES , Toronto, ON, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Antoine","family":"Eskander","sequence":"additional","affiliation":[{"name":"ICES , Toronto, ON, Canada"},{"name":"Institute of Health Policy, Management, and Evaluation, University of Toronto , Toronto, ON, Canada"},{"name":"Department of Otolaryngology\u2013Head and Neck Surgery, Michael Garron Hospital and Sunnybrook Health Sciences Centre, University of Toronto , Toronto, ON, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"286","published-online":{"date-parts":[[2022,8,18]]},"reference":[{"issue":"3","key":"2022110215315298400_pkac062-B1","doi-asserted-by":"publisher","first-page":"e211104","DOI":"10.1001\/jamanetworkopen.2021.1104","article-title":"Access to cancer surgery in a universal health care system during the COVID-19 pandemic","volume":"4","author":"Eskander","year":"2021","journal-title":"JAMA Netw Open"},{"issue":"11","key":"2022110215315298400_pkac062-B2","doi-asserted-by":"publisher","first-page":"1507","DOI":"10.1016\/S1470-2045(21)00493-9","article-title":"Effect of COVID-19 pandemic lockdowns on planned cancer surgery for 15 tumour types in 61 countries: an international, prospective, cohort study","volume":"22","author":"COVIDSurg Collaborative","year":"2021","journal-title":"Lancet Oncol"},{"key":"2022110215315298400_pkac062-B3","doi-asserted-by":"publisher","first-page":"m4087","DOI":"10.1136\/bmj.m4087","article-title":"Mortality due to cancer treatment delay: systematic review and meta-analysis","volume":"371","author":"Hanna","year":"2020","journal-title":"BMJ"},{"key":"2022110215315298400_pkac062-B4","author":"Ontario Health Insurance Plan (OHIP)","year":"2022"},{"key":"2022110215315298400_pkac062-B5","author":"Office of the Premier","year":"2021"},{"issue":"25","key":"2022110215315298400_pkac062-B6","doi-asserted-by":"publisher","first-page":"3083","DOI":"10.1002\/sim.3697","article-title":"Balance diagnostics for comparing the distribution of baseline covariates between treatment groups in propensity-score matched samples","volume":"28","author":"Austin","year":"2009","journal-title":"Stat Med"},{"issue":"3","key":"2022110215315298400_pkac062-B7","doi-asserted-by":"publisher","first-page":"276","DOI":"10.6004\/jnccn.2021.7114","article-title":"Incident cancer detection during the COVID-19 pandemic","volume":"20","author":"Eskander","year":"2022","journal-title":"J Natl Comprehens Cancer Netw"},{"issue":"suppl 16","key":"2022110215315298400_pkac062-B8","doi-asserted-by":"crossref","first-page":"1522","DOI":"10.1200\/JCO.2022.40.16_suppl.1522","article-title":"Imaging and physician visits at cancer diagnosis: COVID-19 pandemic impact on cancer care","volume":"40","author":"Fu","year":"2022","journal-title":"J Clin Oncol"},{"key":"2022110215315298400_pkac062-B9","doi-asserted-by":"publisher","first-page":"106586","DOI":"10.1016\/j.ypmed.2021.106586","article-title":"Measuring the impact of the COVID-19 pandemic on organized cancer screening and diagnostic follow-up care in Ontario, Canada: a provincial, population-based study","volume":"151","author":"Walker","year":"2021","journal-title":"Prev Med"},{"issue":"8","key":"2022110215315298400_pkac062-B10","doi-asserted-by":"publisher","first-page":"1244","DOI":"10.1002\/ijc.33884","article-title":"Predicted long-term impact of COVID-19 pandemic-related care delays on cancer mortality in Canada","volume":"150","author":"Malag\u00f3n","year":"2022","journal-title":"Int J Cancer"},{"key":"2022110215315298400_pkac062-B11","author":"J\u00fcni","year":"2021"},{"key":"2022110215315298400_pkac062-B12","doi-asserted-by":"crossref","DOI":"10.1136\/bmjspcare-2021-003301","article-title":"Newly diagnosed cancer and the COVID-19 pandemic: tumour stage migration and higher early mortality [published online ahead of print October 28, 2021]","author":"Guven","year":"2021","journal-title":"BMJ Support Palliat Care"},{"issue":"11","key":"2022110215315298400_pkac062-B13","doi-asserted-by":"publisher","first-page":"E477","DOI":"10.1002\/bjs.11936","article-title":"Stage migration of colorectal cancer during COVID-19 pandemic","volume":"107","author":"Liyanage","year":"2020","journal-title":"Br J Surg"}],"container-title":["JNCI Cancer Spectrum"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/academic.oup.com\/jncics\/advance-article-pdf\/doi\/10.1093\/jncics\/pkac062\/45475851\/pkac062.pdf","content-type":"application\/pdf","content-version":"am","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/jncics\/article-pdf\/6\/5\/pkac062\/46751256\/pkac062.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/academic.oup.com\/jncics\/article-pdf\/6\/5\/pkac062\/46751256\/pkac062.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,11,2]],"date-time":"2022-11-02T16:50:09Z","timestamp":1667407809000},"score":1,"resource":{"primary":{"URL":"https:\/\/academic.oup.com\/jncics\/article\/doi\/10.1093\/jncics\/pkac062\/6671223"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,8,18]]},"references-count":13,"journal-issue":{"issue":"5","published-print":{"date-parts":[[2022,9,1]]}},"URL":"https:\/\/doi.org\/10.1093\/jncics\/pkac062","relation":{},"ISSN":["2515-5091"],"issn-type":[{"value":"2515-5091","type":"electronic"}],"subject":[],"published-other":{"date-parts":[[2022,10,1]]},"published":{"date-parts":[[2022,8,18]]},"article-number":"pkac062"}}