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Methods Stratified cluster sampling was used to investigate villagers with questionnaire.

采用分层整群随机抽样方法,对家中有流动人口的村民进行调查。

Methods : A questionnaire survey was conducted among 411 medical staff in 15 departments by stratified cluster sampling.

采用分层随机整群抽样方法,对我院15个部门中的411在职医务人员进行问卷调查。

Methods| 10 106 children under 5 years old were selected by cluster sampling.

方法按照分层整群抽样的方法,抽取5岁以下儿童共10 106人,进行营养知识问卷,测量身高、体重。

Methods The cluster sampling method was used to select students and the investigations were carried out through uniform questionnaires.

采用整群抽样的方法,使用统一的调查表,每年对辖区内高中学生的艾滋病知识知晓情况进行调查。

Methods A cross-sectional study was conducted on 1 870 medical college students who were sampled by cluster sampling method.

采用整群抽样方法,对安徽医科大学1 870名大学生进行现况调查。

Methods:Baseline survey was done for 540 children aged 4~5 years with cluster sampling.

使用整群抽样的方法对4~5岁540名儿童进行基线调查后,对整个社区的儿童分完全干预和有限干预两组进行了心理干预,并调查干预1年后的效果。

To interview1483 residents of 15 years and above by the way of stratified and cluster sampling.

通过分层整群抽样访谈调查了黑水县15岁以上居民1483人。

Methods questionnaire survey of 3 500 college students by random cluster sampling.

采用整群抽样抽取3 500名学生,对调查对象进行疾病诊断及影响因素问卷调查。

Methods The stratified cluster sampling was used to research 395 college students of Huangshan college by questionnaires.

采用分层整群抽样方法对安徽黄山学院395名大学生进行网络行为问卷调查。

Methods: The survey were designed by stratified cluster sampling.

方法采取分层整群抽样的方法。

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This one mode pays close attention to network credence foundation of the businessman very much.

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Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

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