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Am J Ind Med. 2019 Mar;62(3):205-211. doi: 10.1002/ajim.22942. Epub 2019 Jan 15.

Breast cancer risk by occupation and industry in women and men: Results from the Occupational Disease Surveillance System (ODSS).

Author information

1
Occupational Cancer Research Centre, Cancer Care Ontario, Ontario, Canada.
2
School of Population and Public Health, University of British Columbia, British Columbia, Canada.
3
Institute for Work & Health, Ontario, Canada.
4
Population Health and Prevention, Cancer Care Ontario, Ontario, Canada.
5
Dalla Lana School of Public Health, University of Toronto, Ontario, Canada.

Abstract

BACKGROUND:

The recently established Occupational Disease Surveillance System (ODSS) was used to examine breast cancer risk in women and men by occupation and industry.

METHODS:

Ontario workers in the ODSS cohort (1983-2016) were followed up for breast cancer diagnosis through the Ontario Cancer Registry. Cox-proportional hazard models were used to calculate age-adjusted hazard ratios (HRs) and 95% confidence intervals (CIs).

RESULTS:

A total of 17 865 and 492 cases were identified in working women (W) and men (M), respectively. Elevated risks were observed in management (W: HR = 1.54, 95% CI = 1.40-1.70; M: HR = 2.79, 95% CI = 1.44-5.39), administrative/clerical (W: HR = 1.16, 95% CI = 1.11-1.21; M: HR = 1.45, 95% CI = 1.06-1.99), and teaching (W: HR = 1.54, 95% CI = 1.44-1.63; M: HR = 3.00, 95% CI = 1.49-6.03). Other elevated risks were observed in nursing/health, social sciences, and janitor/cleaning services for both genders.

CONCLUSIONS:

Common occupational associations in both genders warrant investigation into job-related risk factors, such as sedentary behavior, shift work, ionizing radiation, and chemical exposures.

KEYWORDS:

breast cancer; cohort; male breast cancer; occupation; surveillance

PMID:
30648268
DOI:
10.1002/ajim.22942

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