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## Breadcrumb

            -  Evidence and Innovation 
            -  Teen Pregnancy Prevention Evidence Review 
            -           PPRER000031      

# PPRER000031

Jemmott, J. B., Jemmott, L. S.,  Fong, G. T. (1998). Abstinence and safer sex HIV risk-reduction interventions for African American adolescents: A randomized controlled trial. JAMA: Journal of the American Medical Association, 279(19), 1529-1536.

HighRandom assignment study that met all criteria for a high rating; findings show a positive, statistically significant impact for at least one behavioral outcome

### Program Information

### Evaluation Setting

### Study Sample

### Research Design

### Study Findings

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 meets the review standards for credible evidence whenever it is statistically significant with 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.