CASE-CONTROL STUDY OF CHILDHOOD CANCER AND EXPOSURE TO 60-HZ MAGNETIC FIELDS

摘要: Concern with health effects of extremely low frequency magnetic fields has been raised by epidemiologic studies childhood cancer in relation to proximity electric power distribution lines. This case-control study was designed assess the between residential exposure and development cancer. Eligible cases consisted all 356 residents five-county 1970 Denver, Colorado Standard Metropolitan Statistical Area aged 0-14 years who were diagnosed any form 1976 1983. Controls selected random digit dialing approximate case age, sex, telephone exchange area. Exposure characterized through in-home field measurements under high use conditions wire configuration codes, a surrogate measure long-term levels. Measured had modest association incidence; cutoff score 2.0 milligauss resulted an odds ratio 1.4 (95% confidence interval (CI) = 0.6-2.9) for total cancers somewhat larger ratios (ORs) leukemias (OR 1.9), lymphomas 2.2), soft tissue sarcomas 3.3). Neither 1.0) nor 0.9)more » related cancers. Wire codes associated higher more common among than control homes. The contrast very low, buried 1.5 CI 1.0-2.3) cases, consistency across subgroups except brain 2.0) 0.8). Contrasts code homes produced larger, less precise 2.3 2.9 leukemias, 3.3 lymphomas.« less