Fulton J P, Cobb S, Preble L, Leone L, Forman E
Am J Epidemiol. 1980 Mar;111(3):292-6. doi: 10.1093/oxfordjournals.aje.a112899.
The study of the relationship between childhood leukemia and electric power line configurations in the greater Denver, Colorado, area by Wertheimer and Leeper (Am J Epidemiol 109:273-284, 1979) was repeated in Rhode Island, focusing on leukemia (age at onset, 0-20 years; year of onset, 1964-1978). The addresses of 119 leukemia patients and 240 controls were studied by mapping power lines within 50 yards (45.72 m) of each residence. The shortest distance between each power line and the point of the residence closest to it was found; the number and types of wires in each power line were noted. Exposure weights were assigned each type of wire using Wertheimer and Leeper's median field strength reading for each. Assuming that the strength of the field decreases with the square of the distance from its source, and that fields generated by different wires grouped in the same power line are simply additive, a summary value of relative exposure was calculated for each address. Quartile exposure values for controls were used to group patient exposures. Contrary to Wertheimer and Leeper's results, no relationship was found between leukemia and electric power line configurations.
韦特海默和利珀（《美国流行病学杂志》109:273 - 284, 1979年）对科罗拉多州丹佛市大都市区儿童白血病与输电线配置之间关系的研究在罗德岛州得以重复，重点关注白血病（发病年龄0 - 20岁；发病年份1964 - 1978年）。通过绘制每户住宅50码（45.72米）范围内的输电线，对119名白血病患者和240名对照者的住址进行了研究。找出每条输电线与最靠近它的住宅点之间的最短距离；记录每条输电线中电线的数量和类型。利用韦特海默和利珀对每种电线的中位场强读数为每种电线分配暴露权重。假设场强随距其源的距离平方而减小，且同一输电线中不同电线产生的场强简单相加，为每个住址计算了相对暴露的汇总值。用对照者的四分位数暴露值对患者的暴露情况进行分组。与韦特海默和利珀的结果相反，未发现白血病与输电线配置之间存在关联。
