Methods: The stratified sampling and cluster random sampling methods are used in this survey.
方法：本研究采用分层随机抽样方法和整群随机抽样方法。
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 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 total of 478 children at age of 9-12 years from Tulufan City and Buerjin County of Xinjiang Province were enrolled by random cluster sampling.
方法：分别在新疆吐鲁番市区和布尔津县两地采用随机整群抽样的方法，抽取9~12岁儿童478名。
Cluster and random were carried out for sampling in each group.
组内取样采用随机法和聚类法。
During the course of cluster sample verification, systematic sampling and stratified sampling "s accuracy are prior to simple random sampling" s.
群样本检验中，系统抽样群样本检验和分层随机抽样群样本检验的效果优于简单随机抽样群样本检验。
Methods 112 patients with maintenance hemodialysis were selected by random cluster sampling in Xuzhou First People's Hospital and were assessed by life satisfaction scale questionnaire.
方法采用随机整群抽样的方式抽取徐州市第一人民医院112例进行维持性血液透析的患者，应用生活满意度量表进行问卷调查。
DESIGN: Random cluster sampling methods and a cross-section survey.
设计：随机整群抽样，横断面调查。
Methods By the random cluster sampling method, 860 students were selected and investigated about AIDS with a questionnaire before and after the education.
方法采取随机整群抽样方法，在健康教育开展前后抽取860名大学生匿名进行问卷调查。
Methods 696 community residents over 35 years old were selected by random cluster sampling, questionnaire, physical examination and blood glucose examination.
方法采用整群随机抽样的方法抽取696名35岁以上社区居民，开展问卷调查并进行体格检查及血糖检查。
Methods Questionnairy survey, physical examination, and laboratory testing were conducted urban inhabitants aged above 19 years in Fuzhou and Sanming selected by cluster random sampling.
方法采用整群随机抽样方法，对福州、三明市城区19岁以上居民进行横断面的调查。
Methods Stratified random cluster sampling was applied to conduct the investigation using pre-designed and tested questionnaire.
方法采用分层随机整群抽样方法，对疟史进行问卷调查。
Methods With the method of cluster stratified random sampling, a questionnaire survey was conducted in medical and non-medical higher-educated school in Jilin city.
方法采用整群分层随机抽样的方法，对吉林市某医学院校及非医学高校的在校大学生进行问卷调查。
Methods Stratified random cluster sampling was used, 9 township hospitals were randomly selected from Beihu District, Suxian District and Guiyang County of Chenzhou.
方法采用分层整群随机抽样的方法，在郴州市随机抽取北湖区、苏仙区和桂阳县的9所乡镇卫生院作为调查现场。
Methods Stratified random cluster sampling was used, 9 township hospitals were randomly selected from Beihu District, Suxian District and Guiyang County of Chenzhou.
方法采用分层整群随机抽样的方法，在郴州市随机抽取北湖区、苏仙区和桂阳县的9所乡镇卫生院作为调查现场。
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