方法采取整群随机抽样方法选取被试，对抽取的2 015名大学生进行匿名自填问卷调查。
Methods a cluster random sample of 2 015 undergraduates were investigated with an anonymous questionnaire.
方法在北京市石景山区随机整群抽取3所学校初一到高二学生1 650人，匿名自填问卷调查。
Methods an anonymous questionnaire survey was conducted among 1 650 students drawn randomly from 3 middle schools in Shijingshan County, Beijing using a clustered sampling method.
方法：通过自填式问卷调查12个县内所有乡村医生。
Methods: All village doctors in 12 counties were surveyed with questionnaire.
方法采用分层整群抽样方法，对调查对象进行无记名自填式问卷调查。
Methods Female college students were sampled by cluster sampling and investigated by using questionnaire survey on anonymous basis.
方法对宾馆服务人员进行问卷调查，由被调查者匿名自填调查问卷，当场收回后对数据进行分析处理。
Methods Questionaire investigation was carried out in hotels. After receiving the anonymous forms filled in by the target people, the data were analyzed.
方法对西安市一所综合性大学的1 500名本科生进行自填式问卷调查。
Methods 1 500 undergraduate students in a comprehensive university in Xi an city were investigated with a self-filled questionnaire.
方法在查阅相关资料的基础上，设计自填式问卷调查表对调查对象进行现场调查。
METHODS on the basis of certain references, an questionaire was designed to survey on site.
方法采用自填式问卷调查全省市级及县级疾病预防控制机构和医疗机构网络直报工作人员。
Methods The personnel for HIV/AIDS case online reporting in the municipal-and county-level CDCs and medical institutions in Jiangxi were surveyed by self-filling questionnaire.
方法采用自填式问卷调查全省市级及县级疾病预防控制机构和医疗机构网络直报工作人员。
Methods The personnel for HIV/AIDS case online reporting in the municipal-and county-level CDCs and medical institutions in Jiangxi were surveyed by self-filling questionnaire.
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