title: Occupational exposure to electromagnetic field and breast cancer risk in a large, population-based, case-control study in the United States.
abstract: OBJECTIVE
  Our objective was to evaluate women who were occupationally exposed to electromagnetic fields (EMF) and breast cancer risk.
  
  
  METHODS
  Women diagnosed with breast cancer (n=6213) and randomly selected age-matched control subjects (n=7390) provided breast cancer risk factor information and occupational history. A qualified industrial hygienist classified each job for EMF exposure as background, low, medium, or high.
  
  
  RESULTS
  When compared with the referent of background exposure, the odds ratio adjusted for age and state of residence was 1.06 (95% CI=0.99-1.14) for low exposure, 1.09 (95% CI=0.96-1.23) for medium exposure, and 1.16 (95% CI=0.90-1.50) for high exposure.
  
  
  CONCLUSIONS
  Our findings, taken together with previous epidemiological studies, suggest that exposure to EMF in the workplace may be associated with a slight elevation in breast cancer risk.
authors.affiliation: University of Wisconsin Paul P. Carbone Comprehensive Cancer Center, Madison, WI 53726, USA. jamcelroy@wisc.edu
authors.forename: Jane A
authors.initials: JA
authors.lastname: McElroy
authors.forename: Kathleen M
authors.initials: KM
authors.lastname: Egan
authors.forename: Linda
authors.initials: L
authors.lastname: Titus-Ernstoff
authors.forename: Henry A
authors.initials: HA
authors.lastname: Anderson
authors.forename: Amy
authors.initials: A
authors.lastname: Trentham-Dietz
authors.forename: John M
authors.initials: JM
authors.lastname: Hampton
authors.forename: Polly A
authors.initials: PA
authors.lastname: Newcomb
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000209:etiology*; D016022:Case-Control Studies; D015986:Confounding Factors, Epidemiologic; D004574:Electromagnetic Fields / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008875:Middle Aged; D009784:Occupational Diseases / Q000209:etiology*; D016273:Occupational Exposure / Q000009:adverse effects*; D009790:Occupations; D016017:Odds Ratio; D018570:Risk Assessment; D012307:Risk Factors; D014481:United States