Sampling Key Populations for HIV Surveillance: Results From Eight Cross-Sectional Studies Using Respondent-Driven Sampling and Venue-Based Snowball Sampling

Amrita Rao   ¹ , ScM ;   Shauna Stahlman   ¹ , PhD ;   James Hargreaves   ² , MSc, PhD ;   Sharon Weir   ³ , PhD ;   Jessie Edwards   ³ , PhD ;   Brian Rice   ² , MSc, PhD ;   Duncan Kochelani   ⁴ , MSc ;   Mpumelelo Mavimbela   ⁵ , BSN ;   Stefan Baral   ¹ , MPH, MD

¹ Department of Epidemiology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, United States

² Measurement and Surveillance of HIV Epidemics Consortium, Department of Social and Environmental Health Research, London School of Hygiene & Tropical Medicine, London, United Kingdom

³ Department of Epidemiology, University of North Carolina Gillings School of Global Public Health, Chapel Hill, NC, United States

⁴ Center for Communication Programs, Johns Hopkins University, Mbabane, Swaziland

⁵ Swaziland National AIDS Program, Mbabane, Swaziland