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本文对８个煤矿回顾分析了４０年来尘肺的ＰＭＦ发病率与患病率。６０年代以来，虽然综合防尘已收到明显效果，煤工尘肺发病率明显减少，发病工龄延长，但许多煤矿的ＰＭＦ发病尚无明显减少趋向。通过病例对照研究，经ｌｏｇｉｓｔｉｃ回归分析及随访资料的ＣＯＸ模型分析，认为接触高浓度与高含矽量粉尘是发生ＰＭＦ的决定因素。矿工的ＰＭＦ主要集中于掘进工，采煤工很少发生。接尘后很快发生单纯尘肺者、胸片以圆形小阴影为主及合并肺结核是易患ＰＭＦ的高危对象。
This paper retrospectively analyzed the incidence and prevalence of PMF in 40 years of pneumoconiosis in 8 coal mines. Since the 1960s, although comprehensive dust prevention has received significant results, the incidence of pneumoconiosis in coal miners has been significantly reduced and the length of service has been extended. However, there has been no clear trend of PMF reduction in many coal mines. Through the case-control study, logistic regression analysis and follow-up data COX model analysis, that exposure to high concentrations and high silicon content dust PMF is the deciding factor. The miners’ PMF mainly concentrates on the digger, and the coal miners rarely happen. Immediately after taking the dust simple pneumoconiosis, chest X-ray mainly round and combined with tuberculosis is susceptible to high-risk PMF object.