Evaluation of a Brief Online Sexual Health Program for Adolescents: A Randomized Controlled Trial

Adolescents are at increased risk of acquiring sexually transmitted infections (STIs) and experiencing unintended pregnancy. In particular, adolescents from marginalized communities experience significant sexual health disparities compared to their more advantaged peers. Digital sexual health programs, such as HEART (Health Education and Relationship Training), may be effective in reducing these risks and addressing these disparities. HEART is a web-based intervention focused on the promotion of positive sexual health outcomes, such as sexual decision-making skills, sexual communication skills, sexual health knowledge, and sexual norms and attitudes. The current study evaluates the efficacy of HEART, and examines whether effects were moderated by gender, socioeconomic status (SES), race, English as a second language, and sexual orientation to ensure the program is effective for diverse groups of adolescents. Participants were 457 high school students (Mean_age=15.06, 59% girls, 35% White, 78% heterosexual, 54% receive free or reduced-price lunch). Students were randomized to HEART or an attention matched control and assessed at pretest and immediate posttest. HEART was effective in increasing sexual assertiveness, sexual communication intentions, HIV/STI knowledge, condom attitudes, and safer sex self-efficacy compared to the control condition. There were no significant interactions by gender, SES, race, English as a second language, or sexual orientation, suggesting the program worked equally well for all groups of youth. The findings of this study suggest that HEART may be a promising avenue for the promotion of positive sexual health outcomes for diverse groups of youth.