Same-Gender Sex in the United States
Impact of T-Acasi on Prevalence Estimates
MARIA A. VILLARROEL is with the Program in Health and Behavior Measurement, Research Triangle Institute (RTI), Washington, DC. CHARLES F. TURNER is with the Program in Health and Behavior Measurement, RTI, Washington, DC, and Queens College and the Graduate Center, City University of New York. ELIZABETH EGGLESTON is with the Program in Health and Behavior Measurement, RTI, Washington, DC. ALIA AL-TAYYIB is with the Program in Health and Behavior Measurement, RTI, Washington, DC, and the University of North Carolina at Chapel Hill. SUSAN M. ROGERS is with the Program in Health and Behavior Measurement, RTI, Washington, DC. ANTHONY M. ROMAN is with the Center for Survey Research, University of Massachusetts, Boston. PHILIP C. COOLEY is with the Research Computing Division, RTI, Research Triangle Park, NC. HARPER GORDEK is with Statistics and Epidemiology, RTI, Research Triangle Park, NC. Support for this research was provided by National Institutes of Health grants R01-MH56318 and R01-HD31067 to Charles Turner.
Address correspondence to Charles F. Turner; e-mail: charles.turner{at}qc.cuny.edu.
Well-conducted telephone surveys provide an economical means of estimating the prevalence of sexual and reproductive behaviors in a population. There is, however, a nontrivial potential for bias since respondents must report sensitive information to a human interviewer. The National STD and Behavior Measurement Experiment (NSBME) evaluates a new survey technology—telephone audio computer-assisted self-interviewing (T-ACASI)—that eliminates this requirement. The NSBME embedded a randomized experiment in a survey of probability samples of 1,543 U.S. and 744 Baltimore adults ages 18 to 45. Compared with NSBME respondents interviewed by human interviewers, respondents interviewed by T-ACASI were 1.5 to 1.6 times more likely to report same-gender sexual attraction, experience, and genital contact. The impact of T-ACASI was more pronounced (odds ratio = 2.5) for residents of locales that have historically been less tolerant of same-gender sexual behaviors and for respondents in households with children (odds ratio = 3.0).
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