ArticlePreventive medicine2022
Evaluating the impact of the COVID-19 pandemic on cancer screening in a central Canadian province.
Article in Preventive medicine, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 2 of them syntheses that pooled it.
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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.
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Who cites it
26 citing papers in PubMed, 2 syntheses or guidelines pooled it.
- Associations between SARS-CoV-2 infection and incidence of new chronic condition diagnoses: a systematic review.Emerging microbes & infections · 2023Pooled it
- The Impact of the COVID-19 Pandemic on Breast and Cervical Cancer Screening: A Systematic Review.In vivo (Athens, Greece)Pooled it
- The impact of the COVID-19 pandemic on breast cancer screening, treatment, and overall survival.Breast cancer research and treatment · 2026Article
- Time trend and geographical distribution of colorectal cancer incidence before and after COVID-19 pandemic in southern Iran: an interrupted time series analysis.Gastroenterology and hepatology from bed to bench · 2026Article
- Knowledge attitude and practice regarding cancer screening among Chinese medical students.Scientific reports · 2025Article
- Measuring the Association Between the COVID-19 Pandemic and Cancer Incidence by Sex Using a Quasi-Experimental Study Design.JCO clinical cancer informatics · 2025Article
- Increasing Cervical Cancer Rates Among Women Age 35-54 Years in Canada: Age-Specific Cervical Cancer Incidence Trends in Canada, 1992-2022.JCO oncology advances · 2025Article
- Healthcare utilization and preventive care among social housing residents compared to the general population during the COVID-19 pandemic in Ontario, Canada: a population-based cohort study.Frontiers in public health · 2025Article
- Factors associated with delay or avoidance of medical care during the COVID-19 pandemic in Armenia: results from a nationwide survey.BMC health services research · 2024Article
- Measuring the impact of COVID-19 on cancer survival using an interrupted time series analysis.JNCI cancer spectrum · 2024Article
- The impact of the UK COVID-19 lockdown on the screening, diagnostics and incidence of breast, colorectal, lung and prostate cancer in the UK: a population-based cohort study.Frontiers in oncology · 2024Article
- Cancer incidence during the COVID-19 pandemic by region of residence in Manitoba, Canada: A cancer registry-based interrupted time series study.Cancer medicine · 2023Article
- New Cancer Diagnoses Before and During the COVID-19 Pandemic.JAMA network open · 2023Article
- Impact of the COVID-19 Pandemic on Health Check-ups: A Nationwide Questionnaire Survey in 639 Healthcare Facilities in Japan Society of Ningen Dock.JMA journal · 2023Article
- Article
- Impact of the COVID-19 Pandemic on Cancer Diagnosis in Madrid (Spain) Based on the RTMAD Tumor Registry (2019-2021).Cancers · 2023Article
- Evaluating the impact of COVID-19 on cancer declarations in Quebec, Canada.Cancer medicine · 2023Article
- The Impact of Canadian Medical Delays and Preventive Measures on Breast Cancer Experience: A Silent Battle Masked by the COVID-19 Pandemic.The Canadian journal of nursing research = Revue canadienne de recherche en sciences infirmieres · 2023Article
- Cancer diagnosis in primary care after second pandemic year in Catalonia: a time-series analysis of primary care electronic health records covering about 5 million people.Family practice · 2023Article
- Estimation of Oncologic Surgery Case Volume Before and After the COVID-19 Pandemic in France.JAMA network open · 2023Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We evaluated the impact of COVID-19 on cancer screening in Manitoba, Canada using an interrupted time series (ITS) design and data from Manitoba's population-based, organized cancer screening programs from April 2020 to August 2021. In June 2020 (breast screening was suspended during April and May 2020), there was a 54% decrease between the predicted (i.e., observed data produced from regression models) and expected (i.e., counterfactual values produced for the COVID-19 period by assuming COVID-19 did not occur) number of screening mammograms (ratio = 0.46, 95% Confidence Interval (CI) 0.28-0.64). By December 2020, there was no significant difference between predicted and expected number of screening mammograms (ratio = 0.95, 95% CI 0.80-1.10). In April 2020, there was an 83% decrease in the number of Pap tests (ratio = 0.17, 95% CI 0.04-0.30). By January 2021, there was no significant difference between predicted and expected number of Pap tests (ratio = 0.93, 95% CI 0.81-1.06). In April 2020, there was an 81% decrease in the number of screening program fecal occult blood tests (FOBTs) (ratio = 0.19, 95% CI 0.0-0.44). By September 2020, there was no significant difference between predicted and expected number of FOBTs (ratio = 0.95, 95% CI 0.65-1.24). The estimated cumulative deficit (i.e., backlog) from April 2020 to August 2021 was 17,370 screening mammograms, 22,086 Pap tests, and 5253 screening program FOBTs. Overall, screening programs adapted quickly to the COVID-19 pandemic. Additional strategies may be needed to address remaining backlogs.
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