已往国内文献,对比各地结核病流行情况时,是将不同地区或人群的流行病学调查的疫情指标进行直接比较。由于不同地区(省、地、县、公社、大队)的人口构成及不同年龄、性别的人群结核病疫情水平有所差别,而肺结核病的患、发病率,死亡率随着年龄增长而上升,上升幅度各地区差别也很大,以上因素使流调直接推算的结核病疫情指标不能直接比较。因此当分析结核病患、发病率,死亡率的动态变化或对比不同地区、人群、职业的结核 Previous domestic literature, compared with the prevalence of tuberculosis around the world, is the epidemiological survey of different regions or population epidemiological indicators for direct comparison. Due to the differences in population composition and TB prevalence among people of different ages and genders in different regions (provinces, prefectures, prefectures, communes and brigades), the incidence and incidence of tuberculosis and morbidity and mortality increase with age The magnitude of the differences between regions is also great. The above factors make the direct estimation of TB epidemic indicators can not be directly compared. Therefore, when analyzing the dynamic changes of tuberculosis patients, morbidity and mortality or comparing different regions, populations, occupational TB