Table 2.

Subgroup analyses of anxiety and depression.

Variable		Anxiety				Depression
		k	I2 (%)	SP (%)	95% CI (%)	k	I2 (%)	SP (%)	95% CI
Study grade	Primary students	4	100	0.15	[0.06, 0.33]	1	NA	0.03	[0.02, 0.05]
	Middle students	10	100	0.28	[0.14, 0.50]	7	100	0.21	[0.10, 0.39]
	University students	16	100	0.26	[0.19, 0.34]	20	100	0.27	[0.21, 0.35]
Pandemic risk areas	High-risk area	1	NA	0.37	[0.34, 0.41]	2	58	0.28	[0.24, 0.31]
	Medium-risk area	7	100	0.33	[0.21, 0.49]	4	0	0.26	[0.25, 0.27]
	Lower-risk area	3	100	0.24	[0.14, 0.37]	4	99	0.19	[0.11, 0.30]
	Low-risk area	8	100	0.17	[0.07, 0.36]	8	100	0.18	[0.09, 0.33]
Pandemic period	Occurrence and recessive spread	1	100	0.22	[0.18, 0.26]	1	NA	0.22	[0.18, 0.26]
	Rapid spread and outbreak	6	99	0.25	[0.17, 0.34]	5	100	0.25	[0.13, 0.42]
	Diffusion containment	15	100	0.22	[0.12, 0.37]	15	100	0.20	[0.13, 0.42]
	Diffusion attenuation	2	89	0.42	[0.35, 0.50]	1	NA	0.44	[0.43, 0.45]

SP, summarized proportion; 95% CI, 95% confidence interval; NA, only one study did not have a value for the heterogeneity test.