Table 2.

Summary of the results rated by teachers

Timepoint	Outcome	Type of analysis	N studies	N subjects	SMD	Lower limit	Upper limit	P	Heterogeneity				Egger’s Test publication bias
									Q	df	p	I2	t	p
Post treatment	Total score		4	228	−0.578	−1.063	−0.092	0.020	7.14	3	0.062	59.126	0.155	0.890
	Hyperactivity/impulsivity		4	228	−0.474	−0.860	−0.088	0.016	4.825	3	0.156	37.818	0.311	0.784
	Inattention		4	228	−0.677	−1.245	−0.109	0.020	9.951	3	0.019	69.852	0.103	0.927
Follow-up	Total score		3	198	−0.192	−0.531	0.148	0.268	0.045	2	0.978	0.000	0.134	0.914
	Hyperactivity/impulsivity		3	188	0.105	−0.263	0.473	0.576	2.287	2	0.319	12.565	0.078	0.475
	Inattention		3	188	−0.489	−0.833	−0.144	0.005	1.475	2	0.478	0.000	0.149	0.905

SMD, standardised mean differences.