No UAI with Grindr-Met Partner (N=114) UAI with Grindr-Met Partner (N=29)     Variable Mean (SD) Mean (SD) t p Number of lifetime male anal sex partners 27.3 (42.8) 53.2 (97.9) -1.39 0.17 Number of recent (past 30 day) male anal sex partners 1.9 (2.4) 4.1 (5.4) -2.21 0.04

Table 4: Number of Recent and Lifetime Male Anal Sex Partners among YMSM Who Engaged in Unprotected Anal Intercourse (UAI) Versus Those Who Did Not with Last Grindr-Met Sex Partner , among Those Who Reported Ever Having Sex with Someone Met on Grindr (N=144).