靠近高压输电线路居民的白血病风险。
Risks of leukaemia among residents close to high voltage transmission electric lines.
作者信息
Thériault G, Li C Y
机构信息
Department of Occupational Health, McGill University, Montréal, Québec, Canada.
出版信息
Occup Environ Med. 1997 Sep;54(9):625-8. doi: 10.1136/oem.54.9.625.
OBJECTIVES
To reassess the risk of leukaemia associated with residential exposure near high voltage transmission electric lines of 49 kV and above in view of the recent publications.
METHODS
Through a review of papers considering the risk of leukaemia among people living near high voltage transmission lines, the combined risks of leukaemia were calculated for distances < or = 50 m and < or = 25 m and for exposures at 2 mG, 3 mG, 4 mG, and 10 mG.
RESULTS
The combined analysis of the contributive studies indicated an estimate of risk (odds ratio (OR)) for exposure > or = 2 mG of 1.3, 95% confidence interval (95%CI) 1.0 to 1.7. The ORs increased with exposures at 3 mG, 4 mG, and 10 mG. The risks were also increased for distances of 50 and 25 m from the lines.
CONCLUSIONS
This meta-analysis tends to confirm the presence of an association between exposure to magnetic fields and leukaemia among people who reside in the vicinity of high voltage transmission electric lines of > or = 49 kV. There is consistency across studies. Measures of exposure used in the studies were either distance from the lines or calculated fields estimated from pertinent line features. The results apply to adults as well as to children.
目的
鉴于近期的出版物，重新评估居住在49 kV及以上高压输电线路附近与白血病相关的风险。
方法
通过回顾考虑居住在高压输电线路附近人群患白血病风险的论文，计算距离≤50米和≤25米以及暴露于2毫高斯、3毫高斯、4毫高斯和10毫高斯时白血病的综合风险。
结果
对相关研究的综合分析表明，暴露≥2毫高斯时的风险估计值（优势比（OR））为1.3，95%置信区间（95%CI）为1.0至1.7。OR值随着暴露于3毫高斯、4毫高斯和10毫高斯而增加。距离线路50米和25米处的风险也有所增加。
结论
这项荟萃分析倾向于证实，居住在≥49 kV高压输电线路附近的人群中，暴露于磁场与白血病之间存在关联。各研究结果具有一致性。研究中使用的暴露测量方法要么是与线路的距离，要么是根据相关线路特征计算的估计场强。结果适用于成人和儿童。
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