Effectiveness of Respondent-Driven Sampling to Recruit High Risk Heterosexual Men Who Have Multiple Female Sexual Partners: Differences in HIV Prevalence and Sexual Risk Behaviours Measured at Two Time Points

Health Systems Research Unit, Medical Research Council, Tygerberg, Cape Town, South Africa.
AIDS and Behavior (Impact Factor: 3.49). 12/2010; 14(6):1330-9. DOI: 10.1007/s10461-010-9753-5
Source: PubMed


Regular HIV bio-behavioural surveillance surveys (BBSS) among high risk heterosexual (HRH) men who have multiple female sexual partners is needed to monitor HIV prevalence and risk behaviour trends, and to improve the provision and assessment of HIV prevention strategies for this population. In 2006 and 2008 we used respondent-driven sampling to recruit HRH men and examine differences in HIV prevalence and risk behaviours between the two time points. In both surveys, the target population had little difficulty in recruiting others from their social networks that were able to sustain the chain-referral process. Key variables reached equilibrium within one to six recruitment waves and homophily indices showed neither tendencies to in-group nor out-group preferences. Between 2006 and 2008 there were significant differences in condom use with main sexual partners; numbers of sexual partners; and alcohol consumption. Further BBSS among this population are needed before more reliable trends can be inferred.

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Available from: Lisa Grazina Johnston, Apr 09, 2015
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    • "Reliability was also tested by Burt and Thiede [7] via repeat RDS samples amongst injection drug users within the same geographic area. Comparisons of several key variables suggested that materially different populations may in fact have been accessed with each round of surveying with similar results subsequently found in other studies [8,9]; although true behaviour change over time vs. inadvertent access of different subgroups within a larger population are not easily reconciled. The use of different sampling methods (e.g. "
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    ABSTRACT: A combination of in-depth interviews (n = 38) and surveys (n = 203) were used to (1) identify strategies to recruit persons at high risk for HIV infection; (2) determine whether one strategy was more successful than others; and (3) describe motivators and barriers to participation in HIV-prevention studies. From in-depth interviews, four main recruitment strategies were identified: (1) use of a person with specific knowledge of a target population (link person mobilization); (2) use of co-workers or contemporaries (peer mobilization); (3) use of group or association leaders (leader mobilization); and (4) contacting persons by study staff directly (staff contact mobilization). The odds of inconsistently using condoms during sex were greater among those recruited using the peer mobilization (adjusted odds ratio [AOR] = 3.59; 95% confidence interval [CI] = 1.35-9.54) and the leader mobilization strategies (AOR = 2.76; 95% CI = 1.04-7.38) compared with the link person mobilization strategy. The main motivators for taking part in an HIV research study were receiving HIV-prevention education, HIV information or counselling, and receiving compensation for study participation. The main barriers were fear of lack of confidentiality and HIV testing concerns. Using evaluated strategies to recruit persons at high risk for HIV infection and addressing barriers to participation will improve the conduct and outcome of HIV-prevention studies.
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