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Activity Number: 315
Type: Contributed
Date/Time: Tuesday, August 6, 2013 : 8:30 AM to 10:20 AM
Sponsor: Survey Research Methods Section
Abstract - #309797
Title: Sampling Designs for Populations at High Risk for HIV
Author(s): Lillian Lin*+ and Teresa Finlayson and Ronaldo Iachan and Maria C. B. Mendoza and Cyprian Wejnert
Companies: CDC and CDC and ICF International and CDC and CDC
Keywords: HIV risk ; sampling designs
Abstract:

Since 2003, the Centers for Disease Control and Prevention has conducted the National HIV Behavioral Surveillance System (NHBS) in 20 jurisdictions, defined by metropolitan statistical area (MSA) with the largest burden of HIV disease, in three populations at high risk for HIV acquisition: heterosexuals at increased risk (HET), men who have sex with men (MSM), and injecting drug users (IDU). Designed to monitor prevalence and trends in risk behaviors, HIV testing, and use of prevention services in these populations, surveillance is carried out in each group every 3 years in rotating annual cycles as a behavioral survey. Each jurisdiction conducts about 450-500 interviews during each annual cycle. Identifying and enumerating individuals in these populations is difficult so these populations are hard to reach for disease surveillance. No practical method exists for constructing sampling frames for standard random sampling methods. Therefore, NHBS employs novel approaches to sampling these populations. Respondent-driven sampling is employed to survey HET and IDU. Venue-based sampling is employed to survey MSM. We present overviews of the sampling designs and report on results.


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