Electronic Thesis and Dissertation Repository

Thesis Format

Monograph

Degree

Master of Science

Program

Epidemiology and Biostatistics

Supervisor

Garg, Amit

2nd Supervisor

Sontrop, Jessica

Co-Supervisor

3rd Supervisor

Welk, Blayne

Co-Supervisor

Abstract

This population-based study used administrative healthcare data to examine the uptake of tests recommended for colorectal cancer screening by eligible Ontario physicians and non-physicians, and to examine if testing of primary care physicians is associated with greater testing in their patients. Physicians (n=11,434) were matched 1:4 to non-physicians (n=45,736) on age, sex, and geographic location as of April 21, 2016. Uptake of colorectal tests was similar in physicians (67.9%, 95% CI, 67.0–68.7%) and non-physicians (66.6%, 95% CI, 66.2–67.1%). Physicians were more likely than non-physicians to undergo colonoscopy and less likely to undergo fecal occult blood testing. Uptake of colorectal tests by primary care physicians was associated with greater testing in their patients (adjusted prevalence ratio, 1.10; 95% CI, 1.08–1.12). These results highlight the opportunity for greater screening of physicians, who may in turn positively influence screening in their patients.

Summary for Lay Audience

This study used several databases to examine the uptake of colorectal cancer screening among 11,434 physicians and 45, 736 screen-eligible non-physicians in Ontario. Overall uptake of colorectal tests was similar in physicians (67.9%) and non-physicians (66.6%). Physicians were more likely than non-physicians to undergo colonoscopy and less likely to undergo fecal occult blood testing. Patients were also more likely to be tested if their family physician was tested. These results highlight the opportunity for greater screening of physicians, who may in turn positively influence screening in their patients.

Creative Commons License

Creative Commons Attribution 4.0 License
This work is licensed under a Creative Commons Attribution 4.0 License.

Available for download on Friday, July 30, 2021

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