Cohort and nested case-control studies of hematopoietic cancers and brain cancer among electric utility workers.

摘要: Recent studies have raised concern about the potential health effects of occupational exposures to power frequency electric and magnetic fields. We evaluated cancer mortality for leukemia, brain cancer, lymphoma from 1960 1988 in a cohort 36,221 utility workers using analyses three nested case-control studies. From volunteer sample current workforce that represented variety different occupations work locations, we collected 776 days field measurements. derived exposure information company job history developed scores by linking data measured In title analyses, compared "electrical workers" with other craft occupations, office, technical support staff. Age-specific rates electrical reference were similar. "Electrical had rate ratios or odds ranging 0.7 1.4. Most close 1.0. Lymphomas slightly elevated leukemias cancers (ratios 0.9-1.4 vs 0.7-1.2, respectively). Odds indices, based on mean, median, 99th percentile, fractions exceeding 10 milligauss 50 milligauss, all less than The interval estimates indicate no strong association but are somewhat limited imprecision.