Comparison 1. Number of episodes of aggression.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1.1 CRCT short‐term follow‐up	2	49	Std. Mean Difference (IV, Random, 95% CI)	‐0.33 [‐1.27, 0.61]
1.1.1 Short duration—face‐to‐face	1	10	Std. Mean Difference (IV, Random, 95% CI)	‐1.03 [‐2.40, 0.34]
1.1.2 Long duration—online	1	39	Std. Mean Difference (IV, Random, 95% CI)	0.00 [‐0.63, 0.63]
1.2 CBA short‐term follow‐up	1	155	Risk Ratio (IV, Random, 95% CI)	2.30 [0.97, 5.42]
1.2.1 Short duration—face‐to‐face	1	155	Risk Ratio (IV, Random, 95% CI)	2.30 [0.97, 5.42]
1.3 CBA short‐term follow‐up	1	23	Std. Mean Difference (IV, Random, 95% CI)	‐1.24 [‐2.16, ‐0.33]
1.4 CRCT long‐term follow‐up	1	291	Risk Ratio (IV, Random, 95% CI)	1.14 [0.95, 1.37]
1.4.1 Extended duration—face‐to‐face	1	291	Risk Ratio (IV, Random, 95% CI)	1.14 [0.95, 1.37]