Background: Firefighters, police, and armed services may be exposed to hazards such as combustion by-products and shift work. Methods: The CanCHEC cohort linked 1991 census data to the Canadian cancer registry for follow up. Cox proportional hazards modeling was used to estimate hazard ratios (HRs) and 95% confidence intervals (CIs) to estimate risks for firefighter, police, or armed forces compared to workers in other occupations. Results: The cohort of 1 108 410 men included 4535 firefighters, 10 055 police, and 9165 armed forces. For firefighters, elevated risks were noted for Hodgkin's lymphoma (HR: 2.89, 95%CI: 1.29-6.46), melanoma (HR: 1.67, 95%CI: 1.17-2.37), and prostate cancer (HR: 1.18, 95%CI: 1.01-1.37). Police had elevated risks for melanoma (HR:1.69, 95%CI: 1.32-2.16) and prostate cancer (HR:1.28, 95%CI: 1.14-1.42). No significant associations were found for armed forces workers. Conclusions: Canadian firefighters, police, and armed services, may be at an increased risk of developing certain cancers. Results suggested that a healthy worker effect may influence risk estimates.

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American Journal of Industrial Medicine
Spatial Determinants of Health Lab

Harris, M.A. (M. Anne), Kirkham, T.L. (Tracy L.), MacLeod, J.S. (Jill S.), Tjepkema, M. (Michael), Peters, P, & Demers, P.A. (Paul A.). (2018). Surveillance of cancer risks for firefighters, police, and armed forces among men in a Canadian census cohort. American Journal of Industrial Medicine. doi:10.1002/ajim.22891