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在进行尘肺流行病学回顾性调查、分析防尘前后尘肺发病情况时,往往会遇到历年接尘人数的数字不够准确的问题,给正确的评价造成一定的困难。机率窗分析法(Probability window analysis)可直接利用、评价病例资料,研究疾病的变化趋势。本文试用此法比较广西西湾煤矿防尘前后尘肺发病情况和评价防尘效果。
In a retrospective survey of epidemiological pneumoconiosis, pneumoconiosis before and after the analysis of dust incidence, often encounter the number of dust in the calendar year is not accurate enough number of questions, to the correct evaluation of certain difficulties. Probability window analysis can be used directly to evaluate case data and study disease trends. This article tried this method to compare the incidence of pneumoconiosis before and after dust prevention in West Bay Coal Mine in Guangxi and evaluation of dust-proof effect.