HORIZONS, a two-session STI-prevention program developed for small groups of sexually-active African American adolescent girls, was developed to address a broad range of risk factors, including personal, relational, sociocultural, and structural factors. The overall goals of the program are to reduce recurrent STIs and enhance STI/HIV preventive behaviors. The workshops are interactive, involving the participants in games, role playing, poetry readings, condom skills practice, and self-reflection activities. HORIZONS was evaluated with a randomized control trial that included two conditions (control and intervention). Data was collected from the subjects at baseline, 6-months and 12-months post-completion of the program. When the program participants were compared to their control group peers, the program participants had, on average, a 35% lower risk of having Chlamydia than the control participants (RR, 0.65; 95% CI, 0.42 to 0.98; P=.04). Overall, participants in the program condition had higher self-reported condom use during sexual activity in the previous 14 days (P=.004) and 60 days (P<.001) when compared to the control condition. Program participants were more likely to report consistent condom use for 14 days, 60 days, and at their last sexual activity (P=.04, P=.01, P=.005, respectively). The program condition also reported reduced douching as compared to the control condition (P=.001). HORIZONS is supported by the Office of Adolescent Health (OAH)'s Teen Pregnancy Prevention (TPP) program as an EBI that is medically accurate, age appropriate, and has proven through rigorous evaluation to prevent teen pregnancy and/or associated sexual risk behaviors. Click here to view more detailed information on this program.