Comparison 7. Social skills & context 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)	8	511	SMD (Random, 95% CI)	‐0.63 [‐0.87, ‐0.40]
1.1 All boys	4	275	SMD (Random, 95% CI)	‐0.74 [‐1.04, ‐0.44]
1.2 Not all boys	4	236	SMD (Random, 95% CI)	‐0.55 [‐0.90, ‐0.19]
2 Difference in aggression scale score or observed aggression by sex (up to 12 months)	2	127	SMD (Random, 95% CI)	‐0.43 [‐0.94, 0.08]
2.1 All boys	1	32	SMD (Random, 95% CI)	‐0.79 [‐1.52, ‐0.06]
2.2 Not all boys	1	95	SMD (Random, 95% CI)	‐0.24 [‐0.65, 0.17]
3 Difference in school response to aggressive acts + other acts by sex (post test)	2	62	SMD (Random, 95% CI)	‐0.28 [‐1.65, 1.10]
3.1 All boys	0	0	SMD (Random, 95% CI)	0.0 [0.0, 0.0]
3.2 Not all boys	2	62	SMD (Random, 95% CI)	‐0.28 [‐1.65, 1.10]
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]