A venue-based method for sampling hard-to-reach populations
A venue-based method for sampling hard-to-reach populations
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DOI：
10.1093/phr/116.s1.216
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发表时间：
2001-01-01
影响因子：
3.3
通讯作者：
Smith, PJ
中科院分区：
文献类型：
--
作者：
Muhib, FB;Lin, LS;Smith, PJ
对于许多研究项目来说，构建科学合理的难以接触人群（也称为隐藏人群）样本是一项挑战。传统的抽样调查方法，如从电话或邮件列表中随机抽样，可以产生低数量的合格受访者，而非概率抽样引入未知的bias.The作者描述了一个基于场地的应用程序的时空抽样（TSS），解决了访问难以到达的人群的挑战。该方法需要确定目标人口在特定地点聚集的日期和时间，构建一个地点、日间单位（VDTs）的抽样框架，随机选择和访问VDTs（主要抽样单位），并系统地拦截和收集目标人口中同意的成员的信息。这使得研究人员能够构建一个具有已知属性的样本，对更大规模的场馆游客进行统计推断，并对可能限制结果推广到目标人群的偏见进行理论化。作者描述了他们在正在进行的青年社区干预试验（CITY）项目中使用TSS来生成与男性发生性关系的年轻男性的系统样本，该项目是由疾病控制和预防中心资助的一项正在进行的社区艾滋病预防干预试验，TSS方法是可重复的，可以适用于其他情况、环境和文化中难以接触的人群。
Constructing scientifically sound samples of hard-to-reach populations, also known as hidden populations, is a challenge for many research projects. Traditional sample survey methods, such as random sampling from telephone or mailing lists, can yield low numbers of eligible respondents while non-probability sampling introduces unknown biases.The authors describe a venue-based application of time-space sampling (TSS) that addresses the challenges of accessing hard-to-reach populations. The method entails identifying days and times when the target population gathers at specific venues, constructing a sampling frame of venue, day-time units (VDTs), randomly selecting and visiting VDTs (the primary sampling units), and systematically intercepting and collecting information from consenting members of the target population. This allows researchers to construct a sample with known properties, make statistical inference to the larger population of venue visitors, and theorize about the introduction of biases that may limit generalization of results to the target population.The authors describe their use of TSS in the ongoing Community Intervention Trial for Youth (CITY) project to generate a systematic sample of young men who have sex with men, The project is an ongoing community level HIV prevention intervention trial funded by the Centers for Disease Control and Prevention.The TSS method is reproducible and can be adapted to hard-to-reach populations in other situations, environments, and cultures.