雪球抽样
- 网络Snowball Sampling;snowball sample;snowballed sample
雪球抽样-
方法用方便抽样法和雪球抽样法选取对象，用《同志心理与行为》问卷开展调查。
Methods Convenience sampling and snowball sampling were used to select respondents ;
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社会学定性研究中，通过在社区和性病门诊分别采用滚雪球抽样和方便抽样法招募37名调查对象，对其进行个人深入访谈；
Thirty-seven clients of FSWs were recruited from STD clinics and communities by snowball sampling and random sampling respectively , and their information were collected through in-depth interview in sociological qualitative study ;
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方法采用滚雪球抽样法和方便抽样法选取对象，用自行设计的《同志健康需求评估》问卷开展调查。
Methods Convenience sampling and snowball sampling were used to select respondents ; questionnaire was used during the research .