Ford Wesley L, Weiss George, Kipke Michele D, Ritt-Olson Anamara, Iverson Ellen, Lopez Donna
Office of Ambulatory Care, Los Angeles County Department of Health Services, 313 N. Figueroa St, Suite 704, Los Angeles, CA 90012.
J Gay Lesbian Soc Serv. 2009 Oct 1;21(4):357-373. doi: 10.1080/10538720802498280.
Recruiting a scientifically sound cohort of young men who have sex with men (YMSM) is an enduring research challenge. The few cohort studies that have been conducted to date on YMSM have relied on non-probability sampling methods to construct their cohorts. While these studies have provided valuable information about HIV risk behaviors among YMSM, their generalizability to broader YMSM populations is limited.In this paper the authors describe a venue-based sampling methodology used to recruit a large and diverse cohort of YMSM from public venues in Los Angeles County. Venue-based sampling is a multi-stage, probability sampling design that uses standard outreach techniques and standard survey methods to systematically enumerate, sample, and survey hard-to-reach populations. The study design allowed the authors to estimate individual, familial and interpersonal psychosocial factors associated with HIV risk and health seeking behaviors for a cohort of YMSM with known properties. Study participants completed an extensive baseline survey and over a two year period will complete four follow-up surveys at six-month intervals. The baseline survey was administered in both English and Spanish.
招募一批科学合理的男男性行为青年（YMSM）是一项长期存在的研究挑战。迄今为止，针对男男性行为青年开展的队列研究寥寥无几，且这些研究都依赖非概率抽样方法来构建队列。虽然这些研究提供了有关男男性行为青年中艾滋病毒风险行为的宝贵信息，但它们对更广泛的男男性行为青年群体的普遍性有限。在本文中，作者描述了一种基于场所的抽样方法，该方法用于从洛杉矶县的公共场所招募一个规模庞大且多样化的男男性行为青年队列。基于场所的抽样是一种多阶段概率抽样设计，它使用标准的外展技术和标准的调查方法来系统地枚举、抽样和调查难以接触到的人群。该研究设计使作者能够估计与一组具有已知特征的男男性行为青年的艾滋病毒风险及寻求健康行为相关的个体、家庭和人际心理社会因素。研究参与者完成了一项广泛的基线调查，并将在两年时间内每隔六个月完成四次随访调查。基线调查以英语和西班牙语进行。
