Attfield M D, Althouse R B
Division of Respiratory Disease Studies, National Institute for Occupational Safety and Health, Morgantown, WV 26505.
Am J Public Health. 1992 Jul;82(7):971-7. doi: 10.2105/ajph.82.7.971.
Statistics on prevalence of pneumoconiosis among working underground coal miners from data collected as part of a large national radiographic surveillance program between 1970 and 1986 are presented. The main intent was to examine the time-related trend in prevalence over this period, which coincides with historically low dust levels mandated by federal act.
Tenure-specific prevalence rates and summary statistics derived from them for four consecutive time intervals within the 16-year period were calculated and compared.
The results indicate a reduction in pneumoconiosis over the life of the program. This trend is similar to that seen in epidemiologic studies undertaken concurrently.
Although low participation in the surveillance program and other problems complicate the findings, it appears that reductions in dust exposure mandated by federal act in 1969 have led to lower prevalence of pneumoconiosis among underground coal miners.
本文呈现了作为1970年至1986年一项大型全国性放射学监测项目的一部分所收集的数据中,地下煤矿工人尘肺病患病率的统计情况。主要目的是研究这一时期患病率随时间的变化趋势,这一时期恰逢联邦法案规定的历史最低粉尘水平。
计算并比较了16年期间内连续四个时间段的特定工龄患病率及其汇总统计数据。
结果表明,在该项目实施期间,尘肺病患病率有所下降。这一趋势与同期进行的流行病学研究结果相似。
尽管监测项目参与率低以及其他问题使研究结果复杂化,但1969年联邦法案规定的粉尘接触量减少似乎已导致地下煤矿工人尘肺病患病率降低。