Reaching Men Who Have Sex with Men: A Comparison of Respondent-Driven Sampling and Time-Location Sampling in Guatemala City
Gabriela Paz‐Baileya b✉, William Millerc d, Ray W. Shiraishie f, Jerry Owen Jacobsong, Taiwo O. Abimbolae f, Sanny Y. Chene f
- aDivision of HIV/AIDS Prevention, National Center for HIV, Hepatitis, STD and Tuberculosis, Centers for Disease Control and Prevention, 1600 Clifton Rd NE, MS E-46, Atlanta, GA, 30333, USA, gmb5@cdc.gov
- bNational Center for HIV, Hepatitis, STD and Tuberculosis, Centers for Disease Control and Prevention
- cDepartment of Public Health, University of Chapel Hill, Chapel Hill, NC, USA
- dUniversity of Chapel Hill
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Abstract
We present a comparison of respondent-driven sampling (RDS) and time-location sampling (TLS) for behavioral surveillance studies among men who have sex with men (MSM). In 2010, we conducted two simultaneous studies using TLS (N = 609) and RDS (N = 507) in Guatemala city. Differences in characteristics of the population reached based on weighted estimates as well as the time and cost of recruitment are presented. RDS MSM were marginally more likely to self-report as heterosexual, less likely to disclose sexual orientation to family members and more likely to report sex with women than TLS MSM. Although RDS MSM were less likely than TLS MSM to report ≥2 non-commercial male partners, they were more likely to report selling sex in the past 12 months. The cost per participant was $89 and $121 for RDS and TLS, respectively. Our results suggest that RDS reached a more hidden sub-population of non-gay-identifying MSM than TLS and had a lower implementation cost.ResumenPresentamos una comparación de dos estudios de vigilancia del comportamiento en hombres que tienen relaciones sexuales con hombres (HSH) que utilizaron muestreo dirigido por los participantes (RDS, por sus siglas en inglés) y muestreo por tiempo-lugar (TLS, por sus siglas en inglés). En el 2010, realizamos dos estudios simultáneos usando TLS (N = 609) y RDS (N = 507) en la Ciudad de Guatemala. Se presentaron diferencias en las características de la población alcanzada con base en cálculos ponderados, así como en el tiempo y el costo del reclutamiento. Los HSH del RDS tenían una probabilidad ligeramente más alta de reportarse como heterosexuales, una probabilidad menor de revelar su orientación sexual a los familiares y una probabilidad mayor de reportar relaciones sexuales con mujeres que los HSH del TLS. Aunque los HSH del RDS tenían menos probabilidades que los HSH del TLS de reportar ≥ 2 parejas masculinas no comerciales, ellos tenían más probabilidades de reportar la venta de sexo en los 12 meses anteriores. El costo por participante fue de 89 y 121 dólares en RDS y TLS, respectivamente. Nuestros resultados indican que el RDS alcanzó a una subpoblación más escondida de HSH que no se identificaban como homosexuales comparado con TLS, y tuvo un costo de implementación más bajo.
TL;DRIt is suggested that RDS reached a more hidden sub-population of non-gay-identifying MSM than TLS and had a lower implementation cost and differences in characteristics of the population reached based on weighted estimates as well as the time and cost of recruitment are presented. (Semantic Scholar)

