Supplemental Analyses

Subgroup Differences

No statistically significant difference in program effects according to:

School factors: school level school type

Program factors:

Baseline differences in depression symptoms, that is, whether or not a student entered the study with higher or lower levels of depression symptoms level of prevention comparator type, for example, whether a student received another intervention, or a health class as usual

Study factors: study/publication year risk of bias of each study country

Because several studies did not report the following information, we did not have enough information to reliably test programs differences by: race/ethnicity percent female cultural specificity of interventions