Methods: Epidemiological survey of tuberculosis was conducted by cluster random sampling in the elderly in rural area.
方法：采取整群随机抽样方法，对本市农村地区老年人群进行结核病流行病学抽样调查。
Objective To analyze and evaluate the result of 4 times tuberculosis epidemiological sampling survey in Hunan Province.
目的从湖南省四次结核病流行病学抽样调查(流调)结果分析和评价我省结核病控制工作质量。
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