Abstract
Objective
We aimed to fill in the gap of knowledge on the lung cancer burden resulting from occupational exposures among Chinese men through a population-based case–referent study.
Methods
Detailed information on lifestyle and full occupational histories of 1,208 male lung cancer incident cases and 1,069 age-matched male community referents were obtained through interviews during 2004–2006. The associations between lung cancer risk and exposures to specific or group of agents that were confirmed or suspected occupational carcinogens were analyzed.
Results
After adjustment of smoking and other potential confounding factors, significant odds ratio of lung cancer was observed for workers employed in major industrial divisions of “construction” (1.37, 95% CI: 1.00–1.89) and “financing, insurance, real estate, and business services” (0.48, 95% CI: 0.23–0.97), as well as in the occupational groups of “bricklayers, carpenters, and other construction workers” (1.49, 95% CI: 1.07–2.06). Significantly elevated odds ratios were found for occupational exposures to silica dust (1.75, 95% CI: 1.16–2.62), welding fumes (1.74, 95% CI: 1.13–2.68), diesel exhaust (2.18, 95% CI: 1.23–3.84), and man-made mineral fibers (7.45, 95% CI: 1.63–34.00), while a significantly reduced risk (OR = 0.67, 95% CI: 0.47–0.95) was linked to cotton dust. The population attributable fraction of lung cancer was 3.2% (95% CI: 0.1–7.3%) for construction workers and 9.5% (95% CI: 4.8–15.1%) for the four significant specific exposures.
Conclusions
Our study indicates that previous exposure to occupational carcinogens remains an important determinant of lung cancer burden for Hong Kong Chinese men. However, results obtained from this study should be confirmed by future analyses based on job exposure matrix.
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Abbreviations
- ETS:
-
Environmental tobacco smoke
- ISCO:
-
International Standard Classification of Occupations
- ISIC:
-
International Standard Industrial Classification of All Economic Activities
- MMMF:
-
Man-made mineral fibers
- OR:
-
Odds ratio
- 95% CI:
-
95% Confidence interval
- PAF:
-
Population attributable fraction
- IARC:
-
International Agency for Research on Cancer
- SMR:
-
Standardized mortality ratio
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Acknowledgments
The work described in this paper was substantially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China; Project No. CUHK4460/03M. The funding source had no role in the study design, data collection, data analysis, or interpretation of the findings.
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The authors declared no conflicts of interest.
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Tse, L.A., Yu, I.Ts., Qiu, H. et al. Occupational risks and lung cancer burden for Chinese men: a population-based case–referent study. Cancer Causes Control 23, 121–131 (2012). https://doi.org/10.1007/s10552-011-9861-1
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DOI: https://doi.org/10.1007/s10552-011-9861-1