In the Know: A Cluster Randomized Trial of an In-person Sexual Health Education Program Integrating Digital Technologies for Adolescents

Purpose Integrating digital technologies into sexual health education can offer advantages for connecting with adolescents, particularly populations who may be underserved through common school-based approaches. This study assessed the effectiveness of In the Know, an in-person, group-based sexual health education program integrating digital technologies, codesigned with adolescents. Methods The study design was a cluster randomized trial with 1,263 adolescents aged 13-19 in 95 cohorts, implemented in community-based organizations and schools throughout Fresno County, California. Participants completed a baseline survey and a follow-up survey 3 months later. Two-level mixed-effects regression models with random intercepts for cohort were used to estimate the intervention's impact on unprotected sex, use of clinical health services, knowledge of local sexual health services, technology use to find or schedule services, and sexual health knowledge at the 3-month follow-up. Results The average age of participants was 15.7 years, and the majority identified as Hispanic (71%). In adjusted analyses, intervention group participants were more likely to use clinical services (42.7% vs. 33.2%, p = .009) and reported greater sexual health knowledge at 3 months (57.6% of items answered correctly vs. 50.7%, p = .001). No significant differences were observed in the other outcomes by study group. Discussion In the Know participants demonstrated greater use of clinical health services and sexual health knowledge at 3 months. The study findings show the potential for incorporating user-centered design and technology into sexual health education to better support adolescents who may have limited access to this important information.