ADOLESCENT REPORTS OF OWN AND PARTNER ORGASM AT LAST PARTNERED SEXUAL EVENT - DATA FROM THREE WAVES OF A NATIONALLY REPRESENTATIVE PROBABILITY SURVEY OF U.S. ADOLESCENTS 14-17 YEARS

Purpose: Global sexual wellness principles affirm the developmental importance of emerging sexuality and adolescents' right to experience sexual pleasure, yet most research continues to emphasize sexual "risk" (e.g. unintended pregnancy/STI). Little is known about how often adolescents or their partners report pleasurable aspects of sex - including orgasm - and/or the aspects of sex that increase enjoyment. We used three waves of a nationally representative probability survey to examine: 1) prevalence of adolescents' reported own and partner orgasm during their last partnered sexual event; 2) how sexual event-specific factors impact orgasm likelihood. Methods: Data are the 2014, 2015 and 2018 National Survey of Sexual Health and Behavior - a nationally representative, online probability survey of sexual experiences of individuals in the United States (Ipsos Research). 3267 adolescents aged 14-17 years were available from all waves; we retained for analysis a subset (N=866: 27.2%) reporting a partnered sexual event within the past 6-months. Adolescent-specific design weights adjusted for population characteristics and nonresponse. We used two outcome variables: adolescent's orgasm at last sexual-event and partner's orgasm at last sexual-event (both: not sure, no, yes-1 time and yese2+ times). Predictors: gender (male/female), age (14-17), sexual identity (heterosexual/sexual minority [lesbian, gay, bisexual, asexual or other]), partner status (committed [ref]/justdating/other), event wantedness (single-item, not at all-very much), event pleasure and event pain (both: single-item, not at all-extremely) and sexual behaviors (all no/yes): non-coital (i.e. kissing, hand holding, breast touching), manual-genital (i.e. genital touching, vaginal or anal penetration with fingers), oral-genital (given/received), penile-vaginal or penile-anal. Mixed effects multinomial logistic regression (incident rate ratios[(IRR]) assessed likelihood of orgasm, adjusted for multiple data-waves and population weights. The two outcome variables were evaluated separately, using "no orgasm" as the reference category, and controlling for race/ethnicity (Stata, v.25.0). Results: Half of adolescents reported they or partner (45.7%-48.7%) had at least one orgasm at last sexual event. Females had greater odds of own-orgasm uncertainty (IRR=2.41) and to report a partner's single (IRR=6.40) or multiple (IRR=23.42) orgasms. Adolescents were more likely to be unsure if "dating" (IRR=5.92) or "