方法采用分层随机取样法对抽取的15名陆军军人进行结构式访谈。
Methods The 15 soldiers selected through a hierarchical sampling method were treated by an un-structured interview.
这篇回顾只采用有使用随机或者半随机取样方法的研究。
Only studies using random or quasi-random methods of allocation were considered for this review.
目的研究农村中学生父母养育方式与自尊评价的关系。方法采用随机取样抽取300名农村中学生进行EMBU和SES调查。
OBJECTIVE A study on the relationship between parental rearing pattern and self-esteem of rural middle school students.
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