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Periodic screening for breast and cervical cancer in women with diabetes: a population-based cohort study

Published: November 20, 2021
Category: Bibliography
Authors: Dominika Bhatia, Lawrence F. Paszat, Liisa Jaakkimainen, Lorraine L. Lipscombe, Peter C. Austin, Rinku Sutradhar, Vasily Giannakeas
Country: Canada
Language: English
Types: Care coordination, Care Management, chronic condition
Setting: Government

Abstract

Purpose

Diabetes is associated with poorer cancer outcomes. Screening for breast and cervical cancer is recommended by clinical guidelines; however, utilization of these tests in people with diabetes has been unclear due to methodological limitations in the evidence base. We used administrative data to determine the association between diabetes and the rates of becoming up-to-date with periodic breast and cervical cancer screening over a 20-year period.

Methods

Healthcare databases from Ontario, Canada, were linked to assemble two population-based cohorts of 50–70 and 21–70 year-olds between 1994 and 2011, eligible for breast and cervical cancer screening, respectively. Using age as the time scale, multivariable recurrent events models were implemented to examine the association between the presence of diabetes and the rates of becoming up-to-date with the recommended cancer screenings.

Results

In each of the breast and cervical cancer screening cohorts, there were, respectively, 1,516,302 (16% had diabetes at baseline) and 4,751,220 (9.5% had diabetes at baseline) screen-eligible women. In multivariable models, prevalent diabetes (duration ≥ 2 years) was associated with lower rates of becoming up-to-date with cervical (hazard ratio, HR 0.85, 95% confidence interval, CI 0.84–0.85) and breast (HR 0.94, CI 0.93–0.94) cancer screening, compared to no diabetes.

Conclusions

Having diabetes is associated with decreased rates of becoming up-to-date with two recommended periodic cancer screenings, with a bigger reduction in the rates of becoming up-to-date with cervical cancer screening. Greater attention to cervical cancer preventive services is needed in women with diabetes.

diabetes,impact on cancer screenings

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