Study Details

Citation

Bryan , A. D., Magnan, R. E., Gillman, A. S., Yeater, E. A., Feldstein Ewing, S. W., Kong, A. S., & Schmiege, S. J. (2018). Effect of including alcohol and cannabis content in a sexual risk-reduction intervention on the incidence of sexually transmitted infections in adolescents: A cluster randomized clinical trial. JAMA Pediatrics, 172(4), e175621.

Schmiege , S. J., Magnan, R. E., Yeater, E. A., Ewing, S. W. F., & Bryan, A. D. (2021). Randomized trial to reduce risky sexual behavior among justice-involved adolescents. American Journal of Preventive Medicine, 60(1), 47–56.

Program or Component Study?
Program component
Program or Component Name

Alcohol program content implemented as a supplement to a sexual risk reduction intervention

Show Evidence of Effectiveness
No
Study Rating and Explanation
High —

This study received a high study quality rating because it is a low-attrition randomized controlled trial with no known issues that would suggest the findings cannot be attributed to the program

Program Information

Program Type
Programs for special populations
Sexual health education
Program Length
Fewer than 10 sessions

Evaluation Setting

Evaluation Setting
Correctional facility

Study Sample

Average Age Group
14 to 17
Majority Racial/Ethnic Group
Hispanic or Latino
Sex
Male and female youth

Research Design

Assignment Method
Cluster randomized controlled trial
Sample Size

298

Number of Follow-Ups

4

Length of Last Follow-Up

12 months after end of intervention

Year of Last Data Collection
2014

Study Findings

Result Contraceptive Use
Indeterminate evidence
Reviewed Studies
High-Quality Randomized Trial
Protocol Version
Version 7.0
Details

Alcohol program content implemented as a supplement to a sexual risk reduction intervention, was evaluated using a cluster randomized control trial involving young men and women living at a detention facility in the Southwest United States at the time of study recruitment. Participants were randomly assigned in same-sex groups to one of three interventions: (1) a sexual risk reduction intervention (SRRI); (2) a sexual risk reduction intervention supplemented with an alcohol content component (SRRI + ETOH); or (3) a sexual risk reduction intervention supplemented with an alcohol and cannabis content component (SRRI + ETOH + THC). Surveys were administered immediately before the intervention (baseline) and three, six, nine, and 12 months after the end of the intervention. Urine tests were administered at baseline and 12 months after the end of the intervention to diagnose Chlamydia trachomatis and Neisseria gonorrhoeae.

When examining the effects of the alcohol content component (that is, when examining the contrast SRRI + ETOH vs. SRRI), the authors did not find any statistically significant effects of the alcohol content component on the frequency of unprotected sex. Findings on the proportion of adolescents who received a diagnosis of sexually transmitted infections at the 12-month follow-up were not considered for the review because they did not meet the review evidence standards. Specifically, the findings for the STI outcome received a low rating.

Effect Sizes
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NA = Not available. This means the authors did not report the information in the manuscripts associated with the studies we reviewed.

a This information was not available whenever authors did not report information for the treatment and comparison groups separately on outcome means, standard deviations, and/or sample sizes.

b Authors reported that the program effect (impact) estimate is statistically significant with a p-value of less than 0.05 based on a two-tailed test.

c For some outcomes, having less of that outcome is favorable. In those cases, an effect with a negative sign is favorable to the treatment group (that is, the treatment group had a more favorable outcome than the comparison group, on average).

d An effect shows credibly estimated, statistically significant evidence whenever it has a p-value of less than 0.05 based on a two-tailed test, includes the appropriate adjustment for clustering (if applicable), and it is not based on an endogenous subgroup.

Language directly from the program model developer or authors.