Comparison 8. Combined anger response & social skills interventions versus no intervention by sex.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Difference in aggression scale score or observed aggression by sex (post test)	6	576	SMD (Random, 95% CI)	‐0.28 [‐0.58, 0.01]
1.1 All boys	2	153	SMD (Random, 95% CI)	‐0.31 [‐0.64, 0.01]
1.2 Not all boys	4	423	SMD (Random, 95% CI)	‐0.32 [‐0.79, 0.15]
2 Difference in aggression scale score or observed aggression by sex (up to 12 months)	3	463	SMD (Random, 95% CI)	‐0.34 [‐0.93, 0.26]
2.1 All boys	1	130	SMD (Random, 95% CI)	‐0.12 [‐0.47, 0.23]
2.2 Not all boys	2	333	SMD (Random, 95% CI)	‐0.69 [‐2.38, 1.00]
3 Difference in school response to aggressive acts + other acts by sex (post test)	1	480	SMD (Random, 95% CI)	‐1.95 [‐2.19, ‐1.71]
3.1 All boys	0	0	SMD (Random, 95% CI)	0.0 [0.0, 0.0]
3.2 Not all boys	1	480	SMD (Random, 95% CI)	‐1.95 [‐2.19, ‐1.71]
4 Difference in school response to aggressive acts + other acts by sex (up to 12 months)	0	0	SMD (Random, 95% CI)	0.0 [0.0, 0.0]
4.1 All boys	0	0	SMD (Random, 95% CI)	0.0 [0.0, 0.0]
4.2 Not all boys	0	0	SMD (Random, 95% CI)	0.0 [0.0, 0.0]