Assessment and grouping of occupational magnetic field exposure in five electric utility companies.
Assessment and grouping of occupational magnetic field exposure in five electric utility companies.
复制标题
五家电力公司职业磁场暴露的评估和分组。
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
D. Savitz
中科院分区：
文献类型：
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作者：
H. Kromhout;D. Loomis;G. Mihlan;Lucy A. Peipins;R. Kleckner;R. Iriye;D. Savitz
目标
对随机抽取的5家电力公司的工人进行了60赫兹磁场职业暴露调查。
方法
这项研究促进了对暴露可变性的检查，并为将健康结果与职业磁场暴露联系起来的工作暴露矩阵奠定了基础。
结果
平均暴露量在0.11到1.50微T之间。这五家公司之间的差异很小，城市公司越多，平均水平就越高。每日差异部分超过了组内差异部分和组间差异部分。最终的工作暴露矩阵由五组组成，平均暴露水平分别为0.12、0.21、0.39、0.62和1.27微T。考虑到暴露的差异，即使是这种最佳组合也有相当大的重叠。
结论
研究中使用的工作暴露矩阵有效地结合了不同公司之间职业类别暴露的差异，并提供了一种客观和基于统计的方法来估计累积磁场暴露。
OBJECTIVES
Occupational exposure to 60-Hz magnetic fields was surveyed among randomly selected workers in five electric power companies.
METHODS
The study facilitated the examination of exposure variability and provided the base for a job-exposure matrix linking health outcomes and occupational magnetic field exposures.
RESULTS
Average exposures ranged from 0.11 to 1.50 microT. The differences among the five companies were small, the more urban companies showing somewhat higher averages. The day-to-day component of variance exceeded the within- and between-group components of variance. The final job-exposure matrix consisted of five groups with average exposure levels of 0.12, 0.21, 0.39, 0.62, and 1.27 microT. Given the variance in exposure, even this optimal grouping considerably overlapped.
CONCLUSIONS
The job-exposure matrix used in this study efficiently incorporated the differences in exposure within occupational categories between companies and provided an objective and statistically based method for estimating cumulative magnetic field exposure.