Table 1.

Participant characteristics (N = 4100).

	n	%	95% CI
Socio demographic characteristics
Age group (yrs)
18–25	870	21·2	20·0–22·5
26–35	1451	35·4	33·9–36·9
36–45	894	21·8	20·5–23·1
>45	885	21·6	20·3–22·9
Gender
Male	1666	40·6	39·1–42·2
Female	2434	59·4	57·8–60·9
Highest educational level
Secondary school and below	690	16·8	15·7–18·0
High school	1122	27·4	26·0–28·8
University	2288	55·8	54·3–57·3
Occupation type
Health professionals	127	3·1	2·6–3·7
Food-handling workers/Farmers	338	8·2	7·4–9·1
Industrial workers	831	20·3	19·0–21·5
Officers	1414	34·5	33·0–36·0
Housewife/ Retiree/ Others	1046	25·5	24·2–26·9
Students	344	8·4	7·6–9·3
Average monthly household income (RMB)
<RMB 50,000	1427	34·8	33·3–36·3
RMB 50,000-120,000	1679	41·0	39·4–42·5
>RMB 120,000	994	24·2	22·9–25·6
Location of current workplace/study place
Urban	3286	80·1	78·9–81·4
Sub-urban/rural	814	19·9	18·6–21·1
Knowing someone infected with 2019-nCov infection
Known of family members infected with 2019-nCov
Yes	71	1·7	1·4–2·2
No/Don't know	4029	98·3	97·8–98·6
Known of neighbor infected with 2019-nCov
Yes	473	11·5	10·6–12·6
No/Don't know	3627	88·5	87·4–89·4