Method Using the method of cluster sampling, 182 family members and 213 nurses from 3 general hospitals were sampled and investigated with questionnaires.
方法采用整群抽样的方法选择样本，抽取北京市3所综合性医院的182名住院患者家属和213名护士进行调查。
Methods:Adopt the method of stratified cluster sampling, women were investigated through questionnaire in family.
方法：采用分层整群抽样的方法，对育龄妇女进行入户调查。
The system which is a modular structure adopts 8098 single chip computer of MCS-96 family as the main form board in order to finish sampling and disposing digital signal.
该系统采用模块化结构，主机模板由MCS-96系列8098单片机组成，用于完成数字信号的采集和处理；
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 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。
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