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Effects of cancer screening restart strategies after COVID-19 disruption

. 2021 Apr;124(9):1516-1523. doi: 10.1038/s41416-021-01261-9. Epub 2021 Mar 15. Effects of cancer screening restart strategies after COVID-19 disruption

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Effects of cancer screening restart strategies after COVID-19 disruption

Lindy 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. Affiliations

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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.

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Conflict of interest statement

The authors declare no competing interests.

Figures

Fig. 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. 3

Cumulative 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.

Similar articles Cited by References
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