Table 4.

Subgroup analyses

Variable	Development of mental illness, n (%)	Multivariable model, odds ratio (95% CI)	P
Male (n = 140 391)
Control	9656/137 977 (7.0)	1
COVID-19 survivors	265/2414 (11.0)	1.67 (1.45–1.92)	<0.001
Female (n = 120 492)
Control	9868/116 758 (8.5)	1
COVID-19 survivors	473/3734 (12.7)	2.06 (1.87–2.27)	<0.001
Age: 20–39 (n = 109 567)
Control	6948/106 903 (6.5)	1
COVID-19 survivors	213/2664 (8.0)	1.60 (1.36–1.89)	<0.001
Age: 40–59 (n = 84 723)
Control	5782/82 600 (7.0)	1
COVID-19 survivors	301/2123 (14.2)	2.27 (1.99–2.58)	<0.001
Age: ≥60 (n = 66 593)
Control	6794/65 232 (10.4)	1
COVID-19 survivors	224/1361 (16.5)	1.86 (1.63–2.13)	<0.001
Charlson Comorbidity Index: 0–2 (n = 158 863)
Control	11 569/156 343 (7.4)	1
COVID-19 survivors	322/2520 (12.8)	1.93 (1.72–2.15)	<0.001
Charlson Comorbidity Index: ≥3 (n = 102 020)
Control	7955/98 392 (8.1)	1
COVID-19 survivors	416/3628 (11.5)	1.93 (1.71–2.17)	<0.001

COVID-19, coronavirus disease 2019.