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Document ID (ISN)67890
CIS number 96-2280
ISSN - Serial title 0002-9262 - American Journal of Epidemiology
Year 1996
Convention or series no.
Author(s) Miller A.B., To T., Agnew D.A., Wall C., Green L.M.
Title Leukemia following occupational exposure to 60-Hz electric and magnetic fields among Ontario electric utility workers
Bibliographic information July 1996, Vol.144, No.2, p.150-160. 33 ref.
Abstract Report on a nested case-control study of 1,484 cancer cases and 2,179 matched controls from a cohort of 31,543 Ontario Hydro (electrical utility for the province of Ontario, Canada) male employees. Associations of cancer risk with electric field exposure were evaluated and compared with previously reported findings for magnetic fields. Pensioners and active workers were followed for 18 years and 15 years, respectively. Exposures to electric and magnetic fields and to potential occupational confounders (such as ionizing radiation and known carcinogens) were estimated through job exposure matrices. Odds ratios were elevated for haematopoietic malignancies (all leukaemias) with cumulative electric field exposure. For cumulative magnetic field exposure, there were similar elevations. Evaluation of the combined effect of electric and magnetic fields for leukaemia showed significant elevations of risk for high exposure to both, with a dose-response relation for increasing exposure to electric fields and an inconsistent effect for magnetic fields. There was some evidence of a nonsignificant association for brain cancer and benign brain tumours with magnetic fields. For lung cancer, the odds ratio for high exposure to electric and magnetic fields was 1.84 (95% CI 0.69-4.94).
Descriptors (primary) leukaemia; electric fields; brain cancer; magnetic fields; cancer; exposure evaluation; electrical industry; lung cancer
Descriptors (secondary) Canada; case-control study; Ontario
Document type D - Periodical articles
Country / State or ProvinceCanada
Subject(s) Radiation
Broad subject area(s) Physical hazards
Browse category(ies) Manufacturing of electrical appliances and equipment
Leukaemia
Diseases of the nervous system
Electromagnetic fields
Exposure evaluation
Electricity
Diseases of the respiratory system (except for pneumoconiosis & similar)