Using Stratified Random Sampling 采用分层随机抽样 multistage stratified random sampling 多级分层随机抽样 ..
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Method Using stratified random sampling method.
方法采用分层随机抽样方法。
Methods: Totally 1000 nurses were investigated with a self designed questionnaire using stratified random sampling.
方法：采用分层随机抽样的方法，自行设计问卷，对1000名临床护理人员进行调查。
Methods By using stratified random sampling method 524 college students were selected and surveyed with scales about sense of alienation and subjective well-being.
方法分层随机抽取某高校524名大学生，采用疏离感和主观幸福感量表进行施测。
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