Table 6.
Moderator analysis for school level and program intensity for studies reporting continuous and categorical measures
| Studies reporting continuous measures | Studies reporting categorical measures | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| k |
|
95% CI | Q | df | I 2 | Total between Q | k |
|
95% CI | Q | df | I 2 | Total between Q | |
| School level: | 0.80 | 0.00 | ||||||||||||
| Junior high school | 7 | 0.12*** | 0.05-0.19 | 14.41* | 6 | 58.42% | 8 | 0.91 | 0.77-1.07 | 25.24*** | 7 | 72.26% | ||
| High school | 4 | 0.35 | − 0.15-0.85 | 143.91*** | 3 | 92.92% | 4 | 0.91 | 0.80-1.03 | 2.93 | 3 | 0.00% | ||
| Program intensity: | 0.07 | 0.09 | ||||||||||||
| Medium (6 to 10 hours) | 7 | 0.23 | − 0.00-0.46 | 180.11*** | 6 | 96.67% | 3 | 0.90 | 0.76-1.07 | 0.47 | 2 | 0.00% | ||
| High (11 to >15 hours) | 3 | 0.20*** | 0.13-0.26 | 1.34 | 2 | 0.00% | 12 | 0.93 | 0.82-1.06 | 36.16*** | 11 | 69.58% | ||
Note. Mixed effect analysis. k = number of studies; 
= mean Hedges’g; 
= mean Odds Ratio; 95% CI = 95% confidence interval; Q = test of heterogeneity; df = degrees of freedom; I
2 = proportion of observed dispersion. *p < .05 **p < .01 ***p < .001.