Table 2.

Sensitivity analysis of all studies based on the country of origin, the instrument used, and study quality of the included studies

Subgroups	Studies, n	Prevalence (%)	95%CI	Disorder type	Heterogeneity across the studies		Heterogeneity between groups (P-value)
					I2	P-value
Country
Developed	13	18.80	11.90–28.41	Overall psychotic disorder	99.42	< 0.001	0.313
Developing	5	29.16	13.39–52.28		99.92	< 0.001
Instrument used
Screening	5	32.19	13.51–59.08	Overall psychotic disorder	98.97	< 0.001	0.256
Diagnostic	13	17.42	8.26–30.08		99.78	< 0.001
Quality of studies
High	9	21.37	11.50–36.24	Overall psychotic disorder	99.71	< 0.001	0.868
Fair	9	22.60	16.22–30.57		79.34	< 0.001
Country
Developed	19	8.83	4.28–13.64	Schizophrenia	98.06	< 0.001	0.080
Developing	4	22.15	1.83–43.98		97.22	< 0.001
Year
Before 2010	14	8.88	5.47–14.09	Schizophrenia	92.59	< 0.001	0.386
2010 and above	9	13.20	6.05–26.44		99.49	< 0.001
Year
Before 2010	8	20.09	10.18–28.49	Psychosis	93.92	< 0.001	0.392
2010 and above	10	24.44	13.65–29.03		99.68	< 0.001