【摘要】 目的：探讨影响尘肺致残程度的主要因素。方法：收集５６０例尘肺患者的致残程度鉴定的结果，分析致残程度与各影响因素的关系。结果：矽肺组中伤残二、三级明显高于石棉肺组、碳黑尘肺组、电焊工尘肺组、滑石尘肺组（Ｐ＜０．０５），其中矽肺Ｉ组致残程度严重于矽肺Ⅱ组（Ｐ＜０．０５）。矽肺Ｉ组的致残程度１９５８年前开始接尘组较１９５８、１９６４年及以后接尘组严重（Ｐ＜０．０５）。而且随着Ｘ线分期、病程或年龄增加而加重（Ｐ＜０．０５）。其他各尘肺组中不同期别、病程或年龄组对致残程度均无影响（Ｐ＞０．０５）。结论：粉尘性质不同，其引起的尘肺的致残程度不同，以矽尘最为严重。吸入游离二氧化硅含量高的矽尘致残能力强于含量低者，接尘年代的粉尘浓度高而致残程度重。其它影响因素还有尘肺期别、病程和年龄。更多还原

【Abstract】 To discuss the primary factors contributing to the degree of disability of the patients with pneumoconiosis,the reports of the appraisal for degree of disability of 560 cases of pneumoconiosis were analysed for the relation between the degree of disability and the primary factors.The proportion of grade 2 and 3 of disability in the group of silicosis is higher than that in the groups of asbestosis,carbon black pneumoconiosis,welding worker’s pneumoconiosis and talcosis.The degree of disability in the group I of silicosis is more serious than that in the group Ⅱ. The degree of disability is the most serious in workers who started exposure to dust before 1958.The degree of disability increased with stages,the courses of disease and ages in the group I.These results showed the significant differences ( P <0.05) compared with other groups.It was suggested that the different degree of disability was caused by the different kinds of dust.Silicosis is the most severe.The degree of disability caused by the dust of high free silica is more severe than that of the low one.The degree of disability was also dependent on the concentration of dust.Other factors influencing disability are as follows stages of pneumoconiosis,the courses of disease and ages of patients.更多还原