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Lung cancer, stomach cancer, and smoking status among coal miners. A preliminary test of a hypothesis.

Ames-RG; Gamble-JF
Scand J Work, Environ & Health 1983 Oct; 9(5):443-448
The relationship between coal dust exposure, cancer, and ventilatory function was examined. Forty six coal miners dying of stomach cancer were matched with respect to age at death and year of birth to cases dying of lung cancer, other cancers, and other causes. Cigarette smoking was calculated for each subject and ventilatory function was assessed. Measured by years working under ground, high exposure to coal mine dust was not a statistically significant risk for stomach or lung cancer. When control was introduced for years of smoking for both cancers, the risk for prolonged dust exposure was concentrated among those who smoked for more than 30 years. With control for ventilatory impairment, the stomach cancer risk for coal mine dust exposure was concentrated among those with airways obstruction, though it was not a statistically significant risk. Current cigarette smoking was statistically significant as a risk for lung cancer but not stomach cancer. No relationship was evident between stomach cancer and cigarette smoking. The authors conclude that a trend is seen for stomach cancer risk to be concentrated in miners with airways obstruction and a very slight trend for lung cancer risk to be concentrated in miners with normal ventilatory function.
NIOSH-Author; Synergism; Lung-cancer; Stomach-cancer; Cigarette-smoking; Epidemiology; Coal-miners; Mortality-rates; Risk-analysis; Pulmonary-function
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Scandinavian Journal of Work, Environment and Health