Table 4.

Study components by geographical region

Region	na	Study design				Target population				Average sample size at baseline	Intervention duration (where known)			Overall quality
		Pre/postb	RCT	Non-randomised trial	Mixed methods	Health care workers	Students/ teachers	Family, caregivers, service users	The public		<1 week	1–4 weeks	>4 weeks	Poor/very poor	Moderate/high
East Asia and Pacific	13	3 (23%)	8 (62%)	2 (15%)	0 (0%)	3 (23%)	4 (31%)	6 (46%)	0 (0%)	170	5 (38%)	3 (23%)	3 (23%)	4 (31%)	9 (69%)
Sub-Saharan Africa	11	7 (64%)	1 (9%)	1 (9%)	2 (18%)	4 (36%)	6 (55%)	1 (9%)	0 (0%)	298	8 (73%)	0 (0%)	2 (18%)	3 (27%)	8 (73%)
South Asia	10	7 (70%)	1 (10%)	1 (10%)	1 (10%)	4 (40%)	3 (30%)	2 (20%)	2 (20%)	344	4 (40%)	1 (10%)	3 (30%)	1 (10%)	9 (90%)
Europe and Central Asia	7	2 (29%)	2 (29%)	3 (43%)	0 (0%)	1 (14%)	4 (57%)	2 (29%)	0 (0%)	117	3 (43%)	0 (0%)	4 (57%)	3 (43%)	4 (57%)
Latin America and the Caribbean	7	5 (71%)	1 (14%)	1 (14%)	0 (0%)	3 (43%)	2 (28%)	1 (14%)	1 (14%)	302	2 (29%)	1 (14%)	2 (29%)	2 (29%)	5 (71%)
Middle East and North Africa	4	2 (50%)	2 (50%)	0 (0%)	0 (0%)	1 (25%)	0 (0%)	3 (75%)	0 (0%)	128	2 (50%)	1 (25%)	1 (25%)	1 (25%)	3 (75%)

^aNumber of studies per region.

^bPercentages are out of total studies in each region.

^cLived exp = involving someone with lived experience in intervention development/delivery.

^dReference/evidence of source = the origin of the intervention is referenced/evidence.