A household survey was conducted over 6229 rural households in which there were 15667 persons through stratified and cluster sampling.
本研究采用分层整群随机抽样方法，共调查农村6229户家庭，15667人。
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。
DESIGN: Cluster sampling and stratified analysis.
设计：整群抽样，分层分析。
Methods Stratified cluster sampling was carried out to investigate 312 male physical education teachers aged over 35 years old in 160 primary and secondary schools in Jiaodong peninsula.
方法采用分层整群抽样方法，对胶东半岛160所中小学35岁以上的男性体育教师312人进行问卷调查。
This paper discusses cluster sampling and stratified cluster sampling in continuous surveys with censuses.
本文讨论了连续调查中应用普查方法时的整群抽样和分层整群抽样。
Method: Using stratified cluster sampling, sampling an elementary school respectively in the city and countryside, carries on the check by sight and the correlation factor investigation.
方法：应用分层整群抽样方法，在城市、农村小学中各抽取一所小学，进行视力检查及相关因素调查。
Method: Using stratified cluster sampling, we choose 1600 soldiers and investigate by questionnaires and secret talking.
采用分层整群抽样方法，选取1600名战士，以无记名调查问卷和向调查人员访谈的方式进行调查。
Methods Subjects were collected from community population by stratified multi-stage cluster sampling method. The data gathered from case investigation and serological detection.
方法对社区人群采用多阶段分层整群随机抽样方法抽取研究对象，进行个案调查和血清学检测。
Methods With stratified sampling and cluster sampling, we investigate 487 families in poverty.
方法采用分层整群抽样方法调查487户贫困家庭。
Methods An anonymous survey was conducted among 502 students from a technical college selected by stratified sampling and cluster sampling.
方法采用分层整群抽样的方法对一所职业技术学院的502名学生进行匿名式问卷调查。
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。
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。
METHOD:63 medical institutes nurses have been investigated by Stratified cluster sampling RESULTS. nurses of medical institutes are scarce and their qualities are low.
方法采用分层整群抽样方法调查了63家医疗机构的护理人员。
Methods The survey of prevalence of dental caries in group aged 12 and 15 years in Anhui province was conducted using the non-proportional, stratified, cluster sampling method.
方法对安徽省四县市的12岁及15岁儿童的龋病发病情况进行抽样调查，采用分层、不等比、多阶段整群抽样的方法。
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 Cluster, stratified and multistage sampling was taken. 1261 residents over 40 years old were assigned to fill in the questionnaires designed by WHO.
方法采用多阶段随机分层抽样方法，对1261名40岁以上居民进行问卷调查。
This research adopts investigation methods of stratified sampling and cluster sampling, chooses 95 community health service organizations in 14 cities of Liaoning Province as a analysis sample.
采取分层整群抽样的调查方法，选取辽宁省14个市95家社区卫生服务机构作为分析样本。
The weight coefficient of the index was given out with the stratified cluster sampling and stratified analysis.
并采用分层整群抽样调查和层次分析法相结合的方法，确定出了各指标的权重系数。
Methods504 pilots were selected with the method of stratified cluster sampling , and were valuated by coping style scale, state-trait anxiety scale , Symptom checklist-90( SCL-90).
方法整群抽样抽取飞行员504名，进行应对方式量表、状态-特质焦虑量表、症状自评量表（SCL-90）测试。
METHODS an investigation was made by cluster and stratified sampling method.
方法采用多阶段分层整群抽样方法入户调查。
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 Questionnaire and multistage stratified cluster sampling method were used for the survey.
方法进行问卷调查；采用多阶段整群分层抽样方法。
Methods the stratified randomly cluster sampling was applied by well-trained investigators, and the inquired subject was either householder or the family member who is familiar with the family things.
方法采取典型整群抽样方法抽取样本，由经培训合格的调查员入户调查，对每户的户主或最熟悉家庭情况者进行询问调查。
Methods: the breakfast structure and the nutrition knowledge of 3 547 students in rural boarding middle school in Chongqing were investigated by adopting stratified two-stage cluster sampling method.
方法：采用分层二阶段整群抽样方法，对重庆市3 547名中学生早餐饮食结构和营养知识进行调查。
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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