This hypothesis is consistent with the finding that weekly bar/ club attendance declines with age [29]. Indeed, only one participant over the age of 50 (.76%) reported using ecstasy in the past 6 months.
In a second global study, Dolcini, Catania, Stall, and Pollack [8] presented HIV prevalence and risk behavior information for urban MSM over the age of 50 using self-report (via individual phone interviews) and biomedical testing data. Of the 507 older MSM surveyed, 13% were HIV positive as self-reported and verified by HIV testing procedures several months after the phone interview.