Impact of perceived severity on depression, anxiety, and insomnia among Chinese community residents during the COVID-19 lockdown

Table 2 Correlation analysis

	mean ± SD	1	2	3	4	5
1. Perceived severity	17.75 ± 4.80
2. Interpersonal security	30.48 ± 7.10	-0.33b
3. Certainty in control	30.36 ± 7.94	-0.37b	0.87b
4. Depression	6.81 ± 5.74	0.48b	-0.65b	-0.73b
5. Anxiety	4.83 ± 5.31	0.44b	-0.65b	-0.73b	0.82b
6. Insomnia	8.88 ± 6.05	0.43b	-0.53b	-0.60b	0.71b	0.65b

^bP < 0.01.