... cluster random sampling 整群随机抽样 ; 随机抽样 ; 取样 ; 样法 Stratified cluster random sampling 分层整群随机抽样 ; 分层整群随机抽样 ; 丛集随机取样方法 cluster-sampling 整群抽样 ...
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Methods Stratified cluster random sampling was carried out in prevalence survey and questionnaires was applied.
方法采取分层整群随机抽样方法进行问卷调查。
Methods a questionnaire survey was conducted among the clinical doctors selected by stratified cluster random sampling from grade 1, 2 and 3 hospitals in Guangzhou.
方法采用分层整群随机抽样方法，询问调查抽中的广州市1级、2级和3级医院的一线临床医生。
Methods According with the methods of the forth epidemiologic sampling survey for tuberculosis in our country, the method of stratified cluster random sampling was use in this survey.
方法根据全国第四次结核病流行病学抽样调查方案，采用分层整群随机抽样方法抽取调查点，然后根据调查结果进行分析。
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