Adopting random cluster sampling.
采用随机整群抽样。
DESIGN: a stratified random cluster sampling investigation.
设计：分层整群抽样调查。
DESIGN: Random cluster sampling methods and a cross-section survey.
设计：随机整群抽样，横断面调查。
Methods 1621 students were investigated with questionnaire by random cluster sampling.
方法通过随机整群抽样，对16 21名初中学生进行问卷调查。
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。
Preschool students were selected by random cluster sampling from Songgang street of Bao an district in Shenzhen city.
采用随机整群抽样的方法，对深圳市宝安区松岗街道的学龄前儿童进行视力测查及影响因素调查。
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。
MethodsThrough random cluster sampling, 699 convoying warship soldiers were investigated with Symptom Check-List 90 (SCL-90).
方法采用随机整群抽样法抽取699名护航舰队官兵，用症状自评量表(SCL- 90)对其进行心理测评。
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。
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: 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。
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 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。
The normal value range of indicators about accident proneness were detected according to epidemiological survey results using stratified random cluster sampling in 5 cities.
在5个城市作整群分层随机抽样调查确定与事故倾性有关指标的正常值范围。
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。
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: 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。
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。
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: 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。
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。
Cluster sampling, in which random "clusters" of households are measured, is used in populations that are not in even or structured Settings but are spread unevenly over a large geographic area.
分组抽样，即测量随机的家庭“组”，一般用于不均匀地分散在较大面积地理区域的人群。
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 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 Students in middle school were investigated by means of random straticulate cluster sampling.
方法按整群、分层、随机的原则，用统一的方法和工具，对全市中学生进行抽样调查。
Methods Cluster random sampling was used for investigation of 39 villages selected from 13 counties.
方法采用分层整群随机抽样的方法，对13个中签县市39个村(点)进行调查。
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。
Cluster and random were carried out for sampling in each group.
组内取样采用随机法和聚类法。
Cluster and random were carried out for sampling in each group.
组内取样采用随机法和聚类法。
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