The comparability of men who have sex with men recruited from venue-time-space sampling and facebook: A cohort study

• Type of Material: Article
• Authors: Alfonso C Hernandez-Romieu, Emory University; Patrick Sullivan, Emory University; Travis Sanchez, Emory University; Colleen Kelley, Emory University; John L Peterson, Georgia State University; Carlos Del Rio, Emory University; Laura F Salazar, Georgia State University; Paula Frew, Emory University; Eli S Rosenberg, Emory University
• Language: English
• Date: 2014
• Publisher: Journal of Medical Internet Research
• Publication Version: Final Published Version
• Copyright Statement: © Alfonso C Hernandez-Romieu, Patrick S Sullivan, Travis H Sanchez, Colleen F Kelley, John L Peterson, Carlos del Rio, Laura F Salazar, Paula M Frew, Eli S Rosenberg.
• License: Creative Commons Attribution 2.0 Generic
• Final Published Version (URL): http://dx.doi.org/10.2196/resprot.3342
• Title of Journal or Parent Work: Journal of Medical Internet Research
• Volume: 16
• Issue: 7
• Start Page: e37
• End Page: e37
• Grant/Funding Information: National Institute of Mental Health R01MH085600, Minority Health and Health Disparities RC1MD004370, Eunice Kennedy Shriver National Institute for Child Health and Human Development R01HD067111, NIH P30AI050409–the Emory Center for AIDS Research, and the National Center for Advancing Translational Sciences of the National Institutes of Health under Award Number UL1TR000454.
• Keywords: online MSM; venue-based time sampling; social media recruitment of MSM; men who have sex with men, MSM; Facebook
• Research Categories: Health Sciences, Epidemiology; Health Sciences, Public Health; Sociology, General

Abstract

Background: Recruiting valid samples of men who have sex with men (MSM) is a key component of the US human immunodeficiency virus (HIV) surveillance and of research studies seeking to improve HIV prevention for MSM. Social media, such as Facebook, may present an opportunity to reach broad samples of MSM, but the extent to which those samples are comparable with men recruited from venue-based, time-space sampling (VBTS) is unknown. Objective: The objective of this study was to assess the comparability of MSM recruited via VBTS and Facebook. Methods: HIV-negative and HIV-positive black and white MSM were recruited from June 2010 to December 2012 using VBTS and Facebook in Atlanta, GA. We compared the self-reported venue attendance, demographic characteristics, sexual and risk behaviors, history of HIV-testing, and HIV and sexually transmitted infection (STI) prevalence between Facebook-and VTBS-recruited MSM overall and by race. Multivariate logistic and negative binomial models estimated age/race adjusted ratios. The Kaplan-Meier method was used to assess 24-month retention. Results: We recruited 803 MSM, of whom 110 (34/110, 30.9% black MSM, 76/110, 69.1% white MSM) were recruited via Facebook and 693 (420/693, 60.6% black MSM, 273/693, 39.4% white MSM) were recruited through VTBS. Facebook recruits had high rates of venue attendance in the previous month (26/34, 77% among black and 71/76, 93% among white MSM; between-race P=.01). MSM recruited on Facebook were generally older, with significant age differences among black MSM (P=.02), but not white MSM (P=.14). In adjusted multivariate models, VBTS-recruited MSM had fewer total partners (risk ratio [RR]=0.78, 95% CI 0.64-0.95; P=.01) and unprotected anal intercourse (UAI) partners (RR=0.54, 95% CI 0.40-0.72; P<.001) in the previous 12 months. No significant differences were observed in HIV testing or HIV/STI prevalence. Retention to the 24-month visit varied from 81% for black and 70% for white MSM recruited via Facebook, to 77% for black and 78% for white MSM recruited at venues. There was no statistically significant differences in retention between the four groups (log-rank P=.64). Conclusions: VBTS and Facebook recruitment methods yielded similar samples of MSM in terms of HIV-testing patterns, and prevalence of HIV/STI, with no differences in study retention. Most Facebook-recruited men also attended venues where VTBS recruitment was conducted. Surveillance and research studies may recruit via Facebook with little evidence of bias, relative to VBTS.