Table 3.

Subgroup meta-analysis by study population and assessment tools for the summarized proportion of depression in overall population

Variable	Summarized proportion	95% CI	I2	P value	Number of studies
Overall estimate	0.28	[0.17;0.38]	99.7%	<0.01	9
Study population
General public	0.29	[0.16;0.42]	99.7%	<0.01	6
Health professionals	0.25	[0.04;0.45]	99.7%	<0.01	3
Assessment tools
PHQ-9	0.50	[0.48;0.53]	93.4%	<0.01	2
PHQ-4	0.11	[0.08;0.13]	74.8%	P = 0.047	2

CI Confidence interval