Table 14.
Effect size by type of school‐based intervention
|
Type of Intervention |
SMD |
95% CI |
p‐value |
k |
Measure of Heterogeneity |
|---|---|---|---|---|---|
|
Enhancement of academic skills |
.43 |
(.25; .61) |
p<.001 |
2 |
Q=.09;df=1;p>.05;I2 =0;τ2 =0 |
|
After‐school programme |
.05 |
(‐.08; .17) |
p>.05 |
2 |
Q=.91; df=1; p>.05; I2>=0; τ2 =0 |
|
Mentoring/monitoring |
.47 |
(.02; .93) |
p<.05 |
5 |
Q=20.1;df=4;p<.001;I2 =80;τ2 =.21 |
|
Skills training for students |
.31 |
(‐.05; .67) |
p>.05 |
9 |
Q=60.4;df=8;p<.001; I2 =86;τ2 =.23 |
|
Skills training for teachers |
.31 |
(.11; .52) |
p<.05 |
4 |
Q=13.6;df=3;p<.05; I2 =78;τ2 =.03 |
|
School‐wide strategies |
.20 |
(‐.03; .43) |
p>.05 |
6 |
Q=34.8;df=5;p<.001; I2 =86;τ2 =.06 |
|
Violence reduction |
.48 |
(‐.33; 1.3) |
p>.05 |
3 |
Q=13.3;df=2;p<.001; I2 =85;τ2 =.44 |
|
Counselling, mental health |
.46 |
(.23; .68) |
p<.001 |
3 |
Q=2.65;df=2;p>.05;I2 =25;τ2 =.01 |
|
Other |
.21 |
(.03; .39) |
p<.05 |
4 |
Q=4.11;df=3;p>.05;I2 =27;τ2 =.01 |