DiClemente, R. J., Wingood, G. M., Sales, J. M., Brown, J. L., Rose, E. S., Davis, T. L., Lang, D. L., Caliendo, A., & Hardin, J. W. (2014). Efficacy of a telephone-delivered sexually transmitted infection/human immunodeficiency virus prevention maintenance intervention for adolescents: A randomized clinical trial. JAMA Pediatrics, 168(10), 938-946.

Steiner, R. J., Swartzendruber, A. L., Rose, E., & DiClemente, R. J. (2014). Monitoring knowledge among family, sexually transmitted infections, and sexual partnership characteristics of african american adolescent females. Sexually Transmitted Diseases, 41(10), 601-604. doi:10.1097/OLQ.0000000000000188 [doi]

Program Evaluated HORIZONS
Evidence of Effectiveness Yes
Study Rating and Explanation HighRandom assignment study that met all criteria for a high rating; findings show a positive, statistically significant impact for at least one behavioral outcome
Review Date October 2015

Program Information

Program Type

Program Type is Clinic-based Clinic-based
Sexuality education
Programs for special populations
Youth development

Program Length

Fewer than 10 sessions
Program Length is 10 to 20 sessions 10 to 20 sessions
More than 20 sessions

Evaluation Setting

After school/community-based
Health clinic
Elementary school
Middle school
High school
Evaluation Setting is In-school: High school Multiple settings
Specialized setting

Study Sample

Average Age Group

13 or younger
Average Age Group is 14 to 17 14 to 17
18 or 19

Majority Racial/Ethnic Group

Majority Racial/Ethnic Group is African American African American


Both genders
Gender is Female only Female only
Male only

Research Design

Assignment Method Randomized controlled trial
Sample Size 429
Number of Follow-Ups 6
Length of Last Follow-Up 6 from BL

Study Findings

Sexual Initiation/Abstinence Not measured
Recent Sexual Activity Not measured
Number of Sexual Partners 0
Frequency of Sexual Activity Not measured
Contraceptive Use and/or Consistency +
Sexually Transmitted Infections (STIs) or HIV Mix of positive, null, and/or adverse impacts
Pregnancy or Birth Not measured