Childhood cancer in relation to indicators of magnetic fields from ground current sources

摘要: This study examines childhood cancer risk in relation to certain factors likely indicate magnetic field exposure from ground currents the home. Substantial are most often found homes having conductive plumbing, which an uninterrupted metallic path water pipes and main connects grounding systems of neighboring houses. Information on plumbing conductivity was obtained suppliers for 347 cases 277 controls identified earlier Denver area. An increased observed children with plumbing: The matched odds ratio 1.72 (1.03-2.88) 3.00 (1.33-6.76) when analysis limited who were residentially stable reference date date. A measurement metric active (measurements above-median intensity a nonvertical orientation < 55 degrees horizontal) identified. In contrast measured alone, only modest associations have been reported, this shows high significant [matched O.R. = 4.0 (1.6-10.0)] consistent over range angle cutpoints. Such elevated fields also associated independent data set, gathered adult nonlymphocytic leukemia Seattle both suggest that is among persons residential currents.