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Effects of cancer screening restart strategies after COVID-19 disruptionLindy M Kregting et al. Br J Cancer. 2021 Apr.
. 2021 Apr;124(9):1516-1523. doi: 10.1038/s41416-021-01261-9. Epub 2021 Mar 15. AffiliationsItem in Clipboard
Erratum inKregting LM, Kaljouw S, de Jonge L, Jansen EEL, Peterse EFP, Heijnsdijk EAM, van Ravesteyn NT, Lansdorp-Vogelaar I, de Kok IMCM. Kregting LM, et al. Br J Cancer. 2021 Jul;125(1):145. doi: 10.1038/s41416-021-01427-5. Br J Cancer. 2021. PMID: 33976368 Free PMC article. No abstract available.
Background: Many breast, cervical, and colorectal cancer screening programmes were disrupted due to the COVID-19 pandemic. This study aimed to estimate the effects of five restart strategies after the disruption on required screening capacity and cancer burden.
Methods: Microsimulation models simulated five restart strategies for breast, cervical, and colorectal cancer screening. The models estimated required screening capacity, cancer incidence, and cancer-specific mortality after a disruption of 6 months. The restart strategies varied in whether screens were caught up or not and, if so, immediately or delayed, and whether the upper age limit was increased.
Results: The disruption in screening programmes without catch-up of missed screens led to an increase of 2.0, 0.3, and 2.5 cancer deaths per 100 000 individuals in 10 years in breast, cervical, and colorectal cancer, respectively. Immediately catching-up missed screens minimised the impact of the disruption but required a surge in screening capacity. Delaying screening, but still offering all screening rounds gave the best balance between required capacity, incidence, and mortality.
Conclusions: Strategies with the smallest loss in health effects were also the most burdensome for the screening organisations. Which strategy is preferred depends on the organisation and available capacity in a country.
Conflict of interest statementThe authors declare no competing interests.
FiguresFig. 1. Cancer incidence rate (per 100,000)…
Fig. 1. Cancer incidence rate (per 100,000) after a 6-month disruption compared to undisrupted screening…
Fig. 1. Cancer incidence rate (per 100,000) after a 6-month disruption compared to undisrupted screening over time for the different restart strategies.a Breast cancer, b Cervical cancer, c Colorectal cancer.
Fig. 2. Moving average of cancer-specific death…
Fig. 2. Moving average of cancer-specific death rate (per 100,000) after a 6-month disruption compared…
Fig. 2. Moving average of cancer-specific death rate (per 100,000) after a 6-month disruption compared to undisrupted screening over time for the different restart strategies.a Breast cancer, b Cervical cancer, c Colorectal cancer. The vertical dotted line represents the cut-off used in Fig. 3.
Fig. 3
Cumulative excess in cancer-specific mortality…
Fig. 3
Cumulative excess in cancer-specific mortality rate (per 100,000) after a 6-month disruption compared…
Fig. 3Cumulative excess in cancer-specific mortality rate (per 100,000) after a 6-month disruption compared to undisrupted screening over the years 2020–2030 for the different restart strategies.
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