ALL |
META-ANALYSIS |
CITATIONS |
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Meta-Analysis of Program Effects | ||||||||||||
Outcomes measured | No. of effect sizes | Treatment N | Effect sizes (ES) and standard errors (SE) | Unadjusted effect size (random effects model) | ||||||||
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ES | SE | Age | ES | p-value | ||||||||
Grade point average Non-standardized measure of student performance calculated across subjects. |
1 | 55 | 0.416 | 0.193 | 15 | 0.416 | 0.031 | |||||
Alcohol use before end of high school Any use of alcohol by the end of high school, typically between ages 14 and 18. |
1 | 615 | 0.019 | 0.071 | 15 | 0.019 | 0.784 | |||||
Smoking before end of high school Any smoking of tobacco by the end of high school, typically between ages 14 and 18. |
1 | 615 | 0.182 | 0.071 | 15 | 0.182 | 0.010 | |||||
Delinquent behavior Criminal or delinquent behavior that occurs outside of formal involvement with the justice system (i.e., behavior that does not result in arrests, charges, convictions, incarcerations) for young people. |
1 | 615 | -0.099 | 0.071 | 15 | -0.099 | 0.160 |
Cho, H., Hallfors, D.D., & Sanchez, V. (2005). Evaluation of a high school peer group intervention for at-risk youth. Journal of Abnormal Child Psychology, 33(3), 363-374.