Study Details
Gryczynski, J., Mitchell, S. G., Schwartz, R. P., Dusek, K., O’Grady, K. E., Cowell, A. J., Barbosa, C., Barnosky, A., & DiClemente, C. C. (2021). Computer- vs. nurse practitioner-delivered brief intervention for adolescent marijuana, alcohol, and sex risk behaviors in school-based health centers. Drug and Alcohol Dependence, 218, 108423. https://doi.org/10.1016/j.drugalcdep.2020.108423
Sharma, A., Mitchell, S. G., Nordeck, C. D., Schwartz, R. P., Dusek, K., O’Grady, K. E., & Gryczynski, J. (2022). Sexually transmitted infection testing after brief intervention for risk behaviors in school-based health centers. Journal of Adolescent Health, 70(4), 577–583. https://doi.org/10.1016/j.jadohealth.2021.11.013
In-person delivery of a clinic-based brief intervention by nurse practitioners
Program Information
Evaluation Setting
Study Sample
Research Design
300
2
6 months after baseline
Study Findings
The study is a randomized controlled trial that recruited youth from school-based health centers (SBHC) in two urban public high schools. Three hundred youth were randomly assigned via block-random assignment within site and sex. Half of the adolescents in each block were assigned to the computer delivery of a clinic-based brief intervention (CBI) group and half to the In-person delivery of a clinic-based brief intervention by nurse practitioners (NBI) group. Each of the two types of brief intervention (BI) was delivered in a single session, with CBI taking 19.7 minutes to complete, on average, and NBI taking 17.0 minutes.
Three months after receiving a BI, the study found no statistically significant effects of the delivery format on the number of days of unprotected sex in the last 30 days. The study also examined a subgroup of 254 participants who reported being sexually active at baseline. Six months after receiving a BI, the study found that the adolescents who were sexually active at baseline and were assigned to NBI format were significantly more likely than their counterparts in the CBI group to have been tested for an STI (effect size = 0.49).
The study also examined impacts on the number of days of marijuana use, days of alcohol use, days of binge drinking, days of sex while intoxicated, marijuana-specific problems, and alcohol-specific problems. Findings for these outcomes were not considered for the review because they fell outside the scope of the review.
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.