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了解尘肺结核流行规律,我们对某市1955～1989年间尘肺结核病例资料进行了统计分析,结果如下。(1)患病情况:尘肺病人结核患病率比当地居民高7～50倍,并呈逐年下降趋势,由1961年的57.93％降到1981年的9.41％;(2)病死率:尘肺结核累计病死率为57.26％,而单纯尘肺病死率为18.55％,两者间差异有非常显著意义(p<0.01)。尘肺结核病死率由50年代的4％下降到80
To understand the epidemic of pneumoconiosis, we conducted a statistical analysis of the data of pneumoconiosis cases from 1955 to 1989 in a certain city. The results are as follows. (1) Prevalence of pneumoconiosis: The prevalence of tuberculosis in pneumoconiosis patients is 7 to 50 times higher than that of local residents and shows a declining trend year by year, from 57.93% in 1961 to 9.41% in 1981; (2) Case fatality rate: pneumoconiosis The cumulative case fatality rate was 57.26%, while the simple pneumoconiosis mortality rate was 18.55%. There was a significant difference between the two (p <0.01). The death rate of pneumoconiosis dropped from 4% in the 1950s to 80%