Electric Blanket Use

ABSTRACT: Electric Blanket or Mattress Cover Use and Breast Cancer Incidence in Women 50-79 Years of Age [11/14/2001; Epidemiology]

Epidemiology 2001 November;12(6):613-617.

Copyright 2001 Lippincott Williams & Wilkins.

Electric Blanket or Mattress Cover Use and Breast Cancer Incidence in Women 50-79 Years of Age

Jane A. McElroy1; Polly A. Newcomb1,2; Patrick L. Remington1; Kathleen M. Egan3; Linda Titus-Ernstoff4; Amy Trentham-Dietz1; John M. Hampton1; John A. Baron4; Meir J. Stampfer3,5,6; Walter C. Willett3,5,6

From the 1University of Wisconsin Comprehensive Cancer Center, Madison, WI; 2Fred Hutchinson Cancer Research Center, Seattle, WA; 3Departments of Epidemiology and 6Nutrition, Harvard School of Public Health, Boston, MA; 4Norris Cotton Cancer Center, Dartmouth-Hitchcock Medical Center, Lebanon, NH; and 5Channing Laboratory, Department of Medicine, Harvard Medical School and Brigham and Women's Hospital, Boston, MA.

EPIDEMIOLOGY 2001;12:613-617

Previous research has demonstrated inconsistent associations between electromagnetic radiation, especially from electric blanket use, and breast cancer. Breast cancer risk according to electric blanket or mattress cover use was examined as part of a multicenter population-based case-control study.

Breast cancer patients 50-79 years of age (N = 1949) were identified from statewide tumor registries in Massachusetts, New Hampshire, and Wisconsin from the period June 1994 to July 1995. Women of similar age were randomly selected from population lists as controls.

Information regarding electric blanket and mattress cover use and breast cancer risk factors was obtained through telephone interviews.

After adjustment for age, body mass index, and other breast cancer risk factors, the risk of breast cancer was similar among ever-users (relative risk = 0.93; 95% confidence interval = 0.82-1.06) and lower among current users than among never-users (relative risk = 0.79; 95% confidence interval = 0.66-0.95).

There was no evidence of a dose-response relation with increasing number of months that electric blankets had been used.

This study provides evidence against a positive association between electric blanket or mattress cover use and breast cancer.

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