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- On two-stage adaptive cluster sampling to assess pest density. 应用二阶适应性整群抽样估计害虫密度。
- DESIGN:A stratified randomized cluster sampling survey. 设计:分层随机整群抽样调查。
- Liu,Mayer and Eckhardt discussed interval estimtion of the RR in cluster sampling on the basis of beta binomial model. Liu等人在聚类抽样的情形下基于贝塔二项分布模型讨论了风险比的区间估计问题.
- Contrast group:Other 218 undergraduates were adopted in cluster sampling,taking class as unit. 对照组:除外观察组学生,随机在4届学生中以班为单位整群抽样218名学生。
- Me thods: 5449 students from 5 primary of middle schools in Xining city were chosen with cluster sampling. 方法:随机整群抽取西宁市5所中小学校在校学生5449人,采取问卷进行流行病学调查和研究。
- Methods 273 university students were tested by Lusi Scale with cluster sampling method. 方法应用路西量表采用随机分层抽样的方法对大学生进行心理测试。
- Methods To collect data by cluster sampling and analyze data by polychotomous Logistic regression. 方法采用整群抽样调查搜集资料,采用多分类回归分析筛选影响因素。
- 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。
- 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 Cluster sampling and questionnaire of Road Traffic Safety Education Status of Pupils in Chongqing were conducted in the study. 方法采取整群抽样方法,使用自编的“重庆市小学生道路交通安全教育现状调查表”进行调查。
- The subjects of this research were 647 students adopted by cluster sampling (ma1e235, female412) in Transworld Institute of Technology. 摘要本研究以环球技术学院92学年度下学期日间部的学生647(男生235,女生412)人为对象,采丛集之抽样方法。
- Method: Cyanide methemoglobin method was conducted to determine hemoglobin value, which recommended by WHO on the basis of random cluster sampling. 方法:在随机整群抽样调查的基础上,采用WHO推荐的氰化高铁血红蛋白测定法,对抽查对象测定血红蛋白值。
- Methods A cluster sampling study on the condition of injuries was conducted among 11128 mountainy inhabitants in a whole year. 方法采用整群抽样方法,对安徽省部分山区11128名居民一年中伤害发生情况进行回顾性调查。
- Methods:A questionnaire survey and clinic examination were conducted among married childbearing age women by stratified cluster sampling technique. 方法:采用分层整群抽样的方法对研究对象进行问卷调查和妇科检查。
- Methods: A total of 748 nurses were investigated on general condition,job burnout,social support and job satisfaction by layer cluster sampling. 采用分层整群抽样方法对748名护士进行一般状况、工作倦怠、社会支持及工作满意度调查。
- Methods Stratified random cluster sampling and multi-factor analysis were used to analyze the risk factors associated with NCD. 方法采用整群随机抽样的调查方法,并应用多因素分析的基本方法筛查危险因素。
- Method Stratified random cluster sampling was used to collect data.The data base was established and statistical analysis was made with SPSS. 方法采用分层整群随机抽样方法收集资料,用SPSS软件建立数据库并进行统计分析。
- Methods A cluster sampling and canonical research were adopted to investigated 996 children and their parents with a questionnaire. 方法采用典型调查与整群抽样相结合的方法,对996名儿童及其家长进行问卷调查。
- Methods Using cluster sampling, the study was conducted in a secondary technical school in Hefei, and the available questionnaire were analysed. 方法采用整群抽样的方法在合肥市某中专学校进行问卷调查,并对有效问卷进行统计分析。
- 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。