title: Evaluation of occupational exposure to magnetic fields and motor neuron disease mortality in a population-based cohort.
abstract: OBJECTIVE
  Epidemiologic evidence for the association between electromagnetic fields and amyotrophic lateral sclerosis, the most common form of motor neuron disease (MND), has been inconclusive. We evaluated the association between electromagnetic fields and MND among workers in occupations potentially exposed to magnetic fields
  
  
  METHODS
  MND mortality (ICD-9 335.2) was examined in the National Longitudinal Mortality Study using multivariable proportional hazards models. Occupational exposure to magnetic fields was determined on the basis of a population-based job-exposure matrix. Age at entry, education, race, sex, and income were considered for inclusion as covariates
  
  
  RESULTS
  After adjusting for age, sex, and education, there were no increased risks of MND mortality in relation to potential magnetic field exposure, with hazard ratios around the null in all magnetic field exposure quartiles
  
  
  CONCLUSIONS
  Our study does not provide evidence for an association between magnetic field exposure and MND mortality.
authors.affiliation: Department of Community and Preventive Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA.
authors.forename: Lauren E
authors.initials: LE
authors.lastname: Parlett
authors.forename: Joseph D
authors.initials: JD
authors.lastname: Bowman
authors.forename: Edwin
authors.initials: E
authors.lastname: van Wijngaarden
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D015994:Incidence; D008137:Longitudinal Studies; D060526:Magnetic Fields / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D016472:Motor Neuron Disease / Q000401:mortality*; D009784:Occupational Diseases / Q000401:mortality*; D016273:Occupational Exposure / Q000009:adverse effects*
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