Table 2.

General participants’ information.

Variables	Categories	Number of participants	Percentage
Residence	Cities	2061	95.6
	Villages and towns	55	2.6
	Rural areas	40	1.9
Ethnicity	Han nationality	2112	98.0
	Minority	44	0.2
Age (years)	≤30	989	45.9
	31–40	1146	53.2
	41–50	21	1.0
Education	Junior middle school or below	20	0.9
	Senior middle school polytechnic school	83	3.8
	Junior college	432	20.0
	Bachelor's degree	1153	53.5
	Master's degree	427	19.8
	Doctoral degree or above	41	1.9
Occupation	Public officials	105	4.9
	Clerks	898	41.7
	Teachers	253	11.7
	Health care workers	130	6.0
	Technician	259	12.0
	Service personnel	42	1.9
	Other	469	21.8
Marital status	Unmarried	32	1.5
	Married	2120	98.3
	Divorced	4	0.2
Monthly per capita income (yuan)	≤2000	28	1.3
	2001–5000	250	11.6
	5001–10,000	814	37.8
	10,001–20,000	713	33.1
	>20,000	351	16.3
Number of children	0	1657	76.9
	1	470	21.8
	2	28	1.3
	≥3	1	0.0
	Yes	69	3.2
Whether participant had been infected with COVID-19	No	2152	99.8
	Yes	4	0.2
Whether their partner had been infected with COVID-19	No	2155	100.0
	Yes	1	0.0
Whether participant had contacted confirmed cases of COVID-19	No	2151	99.8
	Yes	5	0.2
Whether their partner had contacted confirmed cases of COVID-19	No	2155	100.0
	Yes	1	0.0
Whether the participant had red or yellow health codes on their mobile phones	No	2,114	98.1
	Yes	42	1.9

COVID-19, coronavirus disease 2019.