The Williams Institute, School of Law, University of California, Los Angeles, Los Angeles, California.
Gallup, Washington, District of Columbia.
LGBT Health. 2020 Feb/Mar;7(2):101-108. doi: 10.1089/lgbt.2019.0145.
Sampling lesbian, gay, and bisexual (LGB) people to recruit a national probability sample is challenging for many reasons, including the low base rate of LGB people in the population. To address this challenge, researchers have relied on diverse approaches to sampling LGB people. We aimed to test an innovative method to assemble a U.S. national probability sample of non-transgender sexual minority adults. Our approach used two phases. In Phase 1, we identified LGBT respondents in a probability general population sample. These respondents were then queried about their sexual orientation and gender identity using short screening questions to identify non-transgender sexual minority respondents. In Phase 2, the identified sexual minority respondents completed the targeted survey online or on a mailed questionnaire. In Phase 1, using random-digit dialing, a nationally representative sample of 366,644 respondents were screened in a brief telephone interview. Of them, 3.5% ( = 12,837) identified as LGB or transgender. In Phase 2, eligible respondents were asked to participate in a self-administered survey questionnaire. Eligibility was based on gender identity, age, race and ethnicity, and educational restrictions. Of the 3525 who were eligible, 81% ( = 2840) agreed to participate in the study (78% agreed to use the web version and 22% the mailed questionnaire), and 49% of web surveys and 46% of mailed surveys were completed. The final sample included 1331 respondents. The benefits of this approach include the ability to assess sexual minority-specific content in a national probability sample; challenges include high cost and low base rates for Asian and American Indian or Alaska Native individuals in the United States.
招募女同性恋、男同性恋和双性恋（LGB）人群来组建全国概率样本由于多种原因具有挑战性，包括人群中 LGB 人群的基础率较低。为了解决这一挑战，研究人员依赖于多种方法来招募 LGB 人群。我们旨在测试一种创新方法，以组建一个美国非跨性别性少数成年人群体的全国概率样本。我们的方法采用了两个阶段。在第一阶段，我们在一个概率总体人群样本中确定了 LGBT 受访者。然后，这些受访者使用简短的筛选问题询问他们的性取向和性别认同，以确定非跨性别性少数受访者。在第二阶段，确定的性少数受访者在线或通过邮寄问卷完成目标调查。在第一阶段，使用随机数字拨号，通过简短的电话访谈对一个具有全国代表性的 366644 名受访者进行了筛选。其中，3.5%（=12837）表示自己是 LGB 或跨性别者。在第二阶段，符合条件的受访者被要求参与自我管理的问卷调查。符合条件的标准是基于性别认同、年龄、种族和民族以及教育限制。在 3525 名符合条件的受访者中，81%（=2840）同意参与研究（78%同意使用网络版本，22%同意使用邮寄问卷），2840 名受访者中，有 49%完成了网络调查，46%完成了邮寄调查。最终样本包括 1331 名受访者。这种方法的好处包括能够在全国概率样本中评估性少数群体的特定内容；挑战包括在美国，亚洲人和美洲印第安人或阿拉斯加原住民的基础率较低，成本较高。
