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为了解结核病疫情及其变化趋势，１９９８年７月对包头市青山区常住人口进行了结核病的流行病学抽样调查，以期为肺结核的防治提供科学依据。１ 对象与方法１．１ 对象 采用分层整群随机抽样的原则，在全区８个办事处中选取富强路办事处４号街坊为调查点，以常住人口为基数
In order to understand the epidemic situation of tuberculosis and its changing trend, epidemiological sampling of tuberculosis was conducted in July 1998 in Qingshan District, Baotou City to provide a scientific basis for the prevention and treatment of tuberculosis. 1 Subjects and Methods 1.1 Subjects stratified cluster random sampling principle, the eight offices in the region selected Fortune Road Office No. 4 neighborhood as a survey point, based on the resident population as the base