Table 1.

Sociodemographic Characteristics of the Study Population (n=5,926)

	Unweighted
	n	%
Age (years)
15–24	579	9.8
25–34	764	12.9
35–44	1369	23.1
45–54	1217	20.5
55–64	838	14.1
65–74	821	13.9
≥ 75	338	5.7
Men	2735	46.2
Married	4520	76.3
Education level
College or above	786	13.3
Senior high school	1461	24.7
Junior high school	2039	34.4
Primary school	959	16.2
Illiterate	681	11.5
Unemployed	3108	52.4
Monthly income (RMB)a
>2000	238	4.0
1000–2000	1508	25.4
500–999	1722	29.1
<500	2458	41.4
Urban residence	3445	58.1
Major medical disorder(s)	1929	32.6
Current smoker	1455	24.6
Current drinker	811	13.7

^aUS$1 = RMB6.90