Use of Audio Computer-assisted Self-Interviews to Assess Tuberculosis-related Risk Behaviors

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Abstract
The objective of this study was to compare self-reported tuberculosis and human immunodeficiency virus (HIV) risk factors obtained from computer-assisted questionnaires and interviewer-assisted questionnaires among participants of a needle exchange program. Between June 1998 and May 1999, needle exchange program participants requesting tuberculosis screening underwent interviews regarding demographics and risk factors for tuberculosis and HIV infection. The first 190 participants underwent traditional interviewer-assisted questionnaires, whereas the remaining 92 underwent computer-assisted questionnaires. Data were analyzed by interview technique using odds ratios (OR) and multiple logistic regression. Among 282 participants, demographic characteristics, health status, HIV serostatus, visits to homeless shelters, alcohol intake, and cigarette smoking were all similar by interview technique. However, respondents receiving computer-assisted questionnaires were more likely than those receiving interviewer-assisted questionnaires to report smoking marijuana (OR = 5.56), crack (OR = 1.88), and heroin (OR = 2.60); as well as sharing cocaine smoking equipment (OR = 4.49), sharing heroin smoking equipment (OR = 2.85), "shotgunning" (OR = 4.48), and visiting crack houses (OR = 4.39). In the final multivariate model, respondents receiving computer-assisted questionnaires were more likely to report "shotgunning" and visiting a crack house relative to respondents receiving interviewer-assisted questionnaires. In conclusion, increased odds of high-risk behaviors for tuberculosis and HIV infection among computer-assisted questionnaire respondents support the use of computer-assisted questionnaires to ascertain risk behavior data for both tuberculosis and HIV. tuberculosis; HIV; self-report; drug use; computer-assisted