RESEARCH METHODThe stratified multi-stage cluster random sampling method was used in the survey.
研究方法本研究采用分层整群随机抽样方法进行抽样。
Method Cluster random sampling method was used to conduct a household survey on the elderly in Luoping Country, Yunnan.
方法采用整群随机抽样的方法，对云南省罗平县的老年人进行入户问卷调查。
Methods: in the communities chosen by stratified cluster random sampling method, we used Geriatric Depression Scale (GDS) to screen about 528 old people to identify the depressed ones.
方法：采用分层整群随机抽样方法在抽取的社区居委会，用老年抑郁量表(GDS)对528名社区老年人进行筛查。
Methods: Stratified random cluster sampling method was used to determine the survey sample.
方法：以分层随机整群抽样的方法，确定调查样本。
Method A total of 4 882 undergraduates from 6 universities in Shanxi province was investigated with multistage stratified random cluster sampling.
方法采用多阶段分层随机整群抽样方法调查山西省普通高校一、二、三年级本专科大学生4 882名。
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。
The genetic resources of South Shaanxi white goats are examined with the method of Stratified Random Cluster sampling.
以系统随机整群抽样法对陕南白山羊进行了遗传资源的抽样检测。
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。
Methods: By using questionnaires with multistage stratified random cluster sampling method, 726 valid questionnaires of 800 were backed from the university students in 4 universities in Dalian city.
对象与方法：研究对象采取分层整群随机抽样的方法，在大连市4所高校大一、大四年级学生中发放问卷800份，收回有效问卷726份。
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 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。
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