Table 2.

Prevalence of psychiatric comorbidities during the COVID-19 epidemic in all subpopulations

Psychiatric outcomes	Number of studies	Events	Sample size	Prevalence (%)	95% CI (%)		I2 (%)	p	Publication bias (Egger's test)
Depression	21	10025	39542	23.9	18.4 - 30.3		99.43	< 0.001	t = 1.28, p = 0.22
Anxiety	24	11690	45253	23.4	19.9 - 27.3		98.78	< 0.001	t = 1.28, p = 0.21
Stress	5	1440	6531	14.2	8.4 - 22.9		98.65	< 0.001	t = 3.37, p = 0.04
Distress	3	555	2840	16.0	8.4 - 28.5		97.77	< 0.001	t = 1.40, p = 0.39
Insomnia	8	3481	14042	26.5	19.1 - 35.5		98.79	< 0.001	t = 0.61, p = 0.57
PTSS	13	4268	11983	24.9	11.0 - 46.8		99.68	< 0.001	t = 2.26, p = 0.04
Poor mental health	5	1216	6406	19.9	11.7 - 31.9		98.92	< 0.001	t = 0.14, p = 0.90

Notes: I² statistic was used to assess the heterogeneity of the studies.

The minimum number of studies required to synthesize data is 3.