Respondent Driven Sampling is an Effective Method for Engaging Methamphetamine Users in HIV Prevention Research in South Africa

Overview

Journal Drug Alcohol Depend

Publisher Elsevier

Specialty Psychiatry

Date 2014 Aug 18

PMID 25128957

Citations 12

Authors

Stephen M Kimani

Melissa H Watt

M Giovanna Merli

Donald Skinner

Bronwyn Myers

Desiree Pieterse

Jessica C MacFarlane

Christina S Meade

Affiliations

Soon will be listed here.

Abstract

Background: South Africa, in the midst of the world's largest HIV epidemic, has a growing methamphetamine problem. Respondent driven sampling (RDS) is a useful tool for recruiting hard-to-reach populations in HIV prevention research, but its use with methamphetamine smokers in South Africa has not been described. This study examined the effectiveness of RDS as a method for engaging methamphetamine users in a Cape Town township into HIV behavioral research.

Methods: Standard RDS procedures were used to recruit active methamphetamine smokers from a racially diverse peri-urban township in Cape Town. Effectiveness of RDS was determined by examining social network characteristics (network size, homophily, and equilibrium) of recruited participants.

Results: Beginning with eight seeds, 345 methamphetamine users were enrolled over 6 months, with a coupon return rate of 67%. The sample included 197 men and 148 women who were racially diverse (73% Coloured, 27% Black African) and had a mean age of 28.8 years (SD=7.2). Social networks were adequate (mean network size >5) and mainly comprised of close social ties. Equilibrium on race was reached after 11 waves of recruitment, and after ≤3 waves for all other variables of interest. There was little to moderate preference for either in- or out-group recruiting in all subgroups.

Conclusions: Results suggest that RDS is an effective method for engaging methamphetamine users into HIV prevention research in South Africa. Additionally, RDS may be a useful strategy for seeking high-risk methamphetamine users for HIV testing and linkage to HIV care in this and other low resource settings.

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