Table 2 displays findings at the triad level. Among the 12,812 triads involving participants with more than one partner, 38% were concurrent (rather than serially monogamous). These findings did not significantly vary by race/ethnicity (adjusted p = 0.21). The duration of concurrent overlap was significantly shorter for white MSM compared to black and Hispanic MSM (51% had ≤ 1 month overlap vs. 48% and 49%, respectively. Table-wide p = .02), but this modest difference is likely not practically important. UAI occurred with both partners among 31% of concurrent triads and was also not different by race/ethnicity (adjusted p = 0.09).