UC Irvine

This brief report describes results on study retention among minority men who have sex with men (MSM) from a 12-week, social networking-based, HIV prevention trial with 1-year follow-up. Participants, primarily minority MSM, were recruited using online and offline methods and randomly assigned to a Facebook (intervention or control) group. Participants completed a baseline survey and were asked to complete two follow-up surveys (12-week follow-up and 1-year post-intervention). 94 % of participants completed the first two surveys and over 82 % completed the baseline and both post-intervention surveys. Participants who spent a greater frequency of time online had almost twice the odds of completing all surveys. HIV negative participants, compared to those who were HIV positive, had over 25 times the odds of completing all surveys. HIV prevention studies on social networking sites can yield high participant retention rates.