Table 2.

Effectiveness across different characteristics selected in the trials (N=10).

Characteristic		Effectivenessa
		Effective, n (%)	Partially effectiveb, n (%)	Ineffective, n (%)
Age of participants
	Below 6 years (n=6)	2 (33)	2 (33)	2 (33)
	Between 9 to 18 years (n=3)	3 (100)	0 (0)	0 (0)
	Above 18 years (n=1)	1 (100)	0 (0)	0 (0)
Duration of intervention
	1 month or shorter (n=4)	3 (75)	0 (0)	1 (25)
	2 to 3 months (n=3)	2 (67)	0 (0)	1 (33)
	Longer than 3 months (n=2)	1 (50)	1 (50)	0 (0)
Format of intervention
	In-session training (n=3)	3 (100)	0 (0)	0 (0)
	Used in their own time (n=7)	3 (43)	2 (29)	2 (29)
Control group content
	Treatment as usual (including delayed treatment) (n=6)	3 (50)	2 (33)	1 (17)
	Picture exchange communication system (n=1)	1 (100)	0 (0)	0 (0)
	Behavioral therapy (n=1)	0 (0)	0 (0)	1 (100)
	Paper-based emotion card training (n=1)	1 (100)	0 (0)	0 (0)
	Use of untrained peers (n=1)	1 (100)	0 (0)	0 (0)
Outcome variables
	Social skills (n=5)	4 (80)	0 (0)	1 (20)
	Cognitive skills (n=2)	2 (100)	0 (0)	0 (0)
	Social and cognitive skills (n=3)	0 (0)	2 (67)	1 (33)

^aEffectiveness is defined by the extent of significant improvements in the selected primary outcomes of the studies.

^bPartially effective means that fewer than half of the indicators of the main outcomes showed significant improvement.