Comparison 3. General behaviour.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Primary meta‐analysis: Teacher‐rated general behaviour at end of treatment	8		Std. Mean Difference (IV, Random, 95% CI)	Subtotals only
1.1 All eligible trials	8	1002	Std. Mean Difference (IV, Random, 95% CI)	‐0.06 [‐0.19, 0.06]
1.2 Sensitivity analysis excluding the 2 trials with the longest treatment duration	6	422	Std. Mean Difference (IV, Random, 95% CI)	‐0.09 [‐0.28, 0.10]
1.3 Sensitivity analysis excluding the 2 largest trials	6	422	Std. Mean Difference (IV, Random, 95% CI)	‐0.09 [‐0.28, 0.10]
2 Secondary analyses: general behaviour	9	2034	Std. Mean Difference (IV, Random, 95% CI)	‐0.26 [‐0.40, ‐0.12]
2.1 Teacher‐rated general behaviour at longest follow‐up	4	637	Std. Mean Difference (IV, Random, 95% CI)	‐0.10 [‐0.27, 0.07]
2.2 Parent‐rated general behaviour at end of treatment	8	995	Std. Mean Difference (IV, Random, 95% CI)	‐0.38 [‐0.61, ‐0.14]
2.3 Parent‐rated general behaviour at longest follow‐up	1	326	Std. Mean Difference (IV, Random, 95% CI)	‐0.21 [‐0.44, 0.03]
2.4 Participant‐rated general behaviour at end of treatment	1	76	Std. Mean Difference (IV, Random, 95% CI)	‐0.07 [‐0.52, 0.38]