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American Journal of Epidemiology Vol. 131, No. 5: 759-762
Copyright © 1990 by The Johns Hopkins University School of Hygiene and Public Health

research-article

USE OF ELECTRIC BLANKETS AND RISK OF TESTICULAR CANCER

RENE VERREAULT1–3 3, NOEL S. WEISS1,2, KATHRYN A. HOLLENBACH1, CLIFTON H. STRADER4 and JANET R. DALING1,2,

1 Department of Epidemiology School of Public Health and Community Medicine, University of Washington Seattle, WA
2 Division of Public Health Sciences, Fred Hutchinson Cancer Research Center Seattle, WA
4 Hanford Environmental Health Foundation Richland, WA

Reprint requests to Dr. Janet R. Daling, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, 1124 Columbia Street-MP381, Seattle, WA 98104

Electric blankets are an important domestic source of electromagnetic fields (EMF) because of the relatively high intensity of emission, prolonged exposure, and intimate contact with the source. In a case-control study of testicular cancerin western Washington during 1981 to 1984, the relation between EMF exposure from electric blankets and the occurrence oftesticular cancer was examined. The respective proportions of cases and controls who reported the use of an electric blanket were almost identical (age-adjusted rate ratio (RR)=1.0, 95% confidence interval (Cl) 0.7–1.4). Distributions of the duration of use were also very similar in cases and controls. Compared with controls, the frequency of use of an electric blanket was slightly lower in men with seminoma (RR=0.7, 95% Cl 0.5–1.2) and slightly higher among men with nonseminoma germ cell tumors (RR=1.4, 95% Cl 0.9–2.3). Overall, the results of this study suggest that increased exposure to EMF from electric blankets contributes little, if at all, to the risk of testicular cancer in adult white men.

electromagnetic fields; testicular neoplasms

3Current address: Department of Social and Preventive Medicine, Faculty of Medinine, Laval University, Quebec, QU, Canada


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