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Identification of Occupational Cancer Risks in British Columbia, Canada: A Population-Based Case—Control Study of 1,155 Cases of Colon Cancer

Author

Listed:
  • Raymond Fang

    (American Academy of Physician Assistants, Suite 1300, 2318 Mill Road, Alexandria, VA 22314, USA
    Cancer Control Research, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, BC V5Z 1L3, Canada)

  • Nhu Le

    (Cancer Control Research, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, BC V5Z 1L3, Canada)

  • Pierre Band

    (Cancer Control Research, British Columbia Cancer Agency, 675 West 10th Avenue, Vancouver, BC V5Z 1L3, Canada
    Health Canada, 50 Columbine Drive, Tunney’s Pasture, Ottawa, ON K1A 0K9, Canada)

Abstract

Objective : Cancer has been recognized to have environmental origin, but occupational cancer risk studies have not been fully documented. The objective of this paper was to identify occupations and industries with elevated colon cancer risk based on lifetime occupational histories collected from 15,463 incident cancer cases. Method : A group matched case-control design was used. All cases were diagnosed with histologically proven colon cancers, with cancer controls being all other cancer sites, excluding rectum, lung and unknown primary, diagnosed at the same period of time from the British Columbia Cancer Registry. Data analyses were done on all 597 Canadian standard occupation titles and 1,104 standard industry titles using conditional logistic regression for matched data sets and the likelihood ratio test. Results : Excess colon cancer risks was observed in a number of occupations and industries, particularly those with low physical activity and those involving exposure to asbestos, wood dusts, engine exhaust and diesel engine emissions, and ammonia. Discussion : The results of our study are in line with those from the literature and further suggest that exposure to wood dusts and to ammonia may carry an increased occupational risk of colon cancer.

Suggested Citation

  • Raymond Fang & Nhu Le & Pierre Band, 2011. "Identification of Occupational Cancer Risks in British Columbia, Canada: A Population-Based Case—Control Study of 1,155 Cases of Colon Cancer," IJERPH, MDPI, vol. 8(10), pages 1-23, September.
    • Handle: RePEc:gam:jijerp:v:8:y:2011:i:10:p:3821-3843:d:14133
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    References listed on IDEAS

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    1. Barry E. Storer & Sholom Wacholder & Norman E. Breslow, 1983. "Maximum Likelihood Fitting of General Risk Models to Stratified Data," Journal of the Royal Statistical Society Series C, Royal Statistical Society, vol. 32(2), pages 172-181, June.
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