Research papers: Other CancersUse of electric blankets and association with prevalence of endometrial cancerAbel, Ernest L.a; Hendrix, Susan L.b; McNeeley, Gene S.b; O'Leary, Erin S.c; Mossavar-Rahmani, Yasmind; Johnson, Susan R.e; Kruger, MichaelaAuthor Information aDepartments of Obstetrics & Gynecology and Psychology bDepartment of Obstetrics & Gynecology and Women's Health Initiative, Wayne State University, Detroit, Michigan cDepartment of Preventive Medicine, School of Medicine, Stony Brook University, Stony Brook dDepartment of Epidemiology and Population Health, Albert Einstein College of Medicine, New York, New York eDepartment of Obstetrics & Gynecology and Epidemiology, University of Iowa, Iowa City, Iowa, USA Correspondence to Ernest L. Abel, PhD, CS, Mott Center for Human Growth and Development, 275 E. Hancock, Detroit, MI 48201, USA Tel: +1 313 577 1068; e-mail: firstname.lastname@example.org Received 1 November 2005 Accepted 11 January 2006 European Journal of Cancer Prevention: June 2007 - Volume 16 - Issue 3 - p 243-250 doi: 10.1097/01.cej.0000228397.22611.d0 Buy Metrics Abstract The objective of this study was to assess the relationship between electric blanket use and prevalence of endometrial cancer for women. Information relating to women enrolled in the Women's Health Initiative Observational Data Set (n=93 676) used to test the relationship factors associated with endometrial cancer included older age at screening, younger age at last menstrual period, region of domicile (highest prevalence in the South), less than a high school education, lower income, body mass index >25 kg/m2, low parity, unopposed use of estrogen, never use of estrogen plus progesterone, past alcohol use, higher percentage of daily calories from fat and any electric blanket use. Following a univariate identification of factors significantly related to endometrial cancer, stepwise logistic regression analysis was performed for those factors with P values of less than 0.001 in the univariate analysis. Using electric blankets was associated with a 15% higher prevalence of endometrial cancer than never having used electric blankets (odds ratio=1.15, 95% confidence interval: 1.03–1.27). After controlling for variables significantly associated with endometrial cancer, use of electric blankets for 20 years or more was associated with 36% higher prevalence of endometrial cancer (odds ratio=1.36, 95% confidence interval: 1.16–1.59). Although we were unable to determine the duration of electric blanket use before diagnosis of endometrial cancer, we found that women using electric blankets for 20 years or more had a significantly higher prevalence. © 2007 Lippincott Williams & Wilkins, Inc.