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American Journal of Epidemiology Vol. 117, No. 6: 706-716
Copyright © 1983 by The Johns Hopkins University School of Hygiene and Public Health

research-article

LUNG CANCER AMONG LONG-TERM STEEL WORKERS

WILLIAM J. BLOT, LINDA MORRIS BROWN, LINDA M. POTTERN, B. J. STONE and JOSEPH F. FRAUMENI, JR.

From the Environmental Epidemiology Branch, National Cancer Institute, Bethesda, MD 20205

Send reprint requests to Dr. William J. Blot, Analytical Studies Section, Environmental Epidemiology Branch, Landow Bldg., Rm 3C09, Bethesda, MD 20205.

A case-control study in an industrialized area of eastern Pennsylvania involving interviews with the next off kin of 335 men who died off lung cancer and off 332 controls who died off other causes revealed a significantly increased risk associated with employment in the steel industry, the area's major employer. The excess was primarily among long-term employees, particularly those who began work before 1935. Adjusted for cigarette smoking, the odds ratio associated with career employment was 1.8 (p = 0.01, 95% confidence interval, 1.2, 2.8). The increase was higher among steel workers who worked in foundry operations, but was seen for broad categories off jobs within the industry. No significant associations were found for other industries, although a 60% increase (p = 0.27, 95% confidence interval, 0.7, 3.7) was noted for zinc smelter workers employed at least 15 years. The findings help clarify the role of occupation as a risk factor for lung cancer in the area, and suggest that exposures in the steel industry contribute to an extent greater than previously recognized.

lung neoplasms; occupations; smoking; steel; zinc


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