Table 1. Socio-demographic characteristics of participants in China.

Characteristics		Participants	Percent
		(N = 2173)	(%)
Area	Urban	1150	52.9
	Rural	1023	47.1
Gender	Male	991	45.6
	Female	1182	54.4
Disease	Hypertension	1367	62.9
	Diabetes	806	37.1
Age-group	<45	109	5
	45–54	211	9.7
	55–64	569	26.2
	65–74	851	39.2
	≥75	433	19.9
Marital status	Unmarried	8	0.4
	Married	1796	82.7
	Divorced	22	1
	Windowed	347	16
Highest educational level attained	No formal education	459	21.1
	Elementary	583	26.8
	Middle school	597	27.5
	High school and above	534	24.6
Personal yearly income a	>Per capita net income	741	34.1
	<Per capita net income	1432	65.9
Distance to the nearest health care institution	≤500m	1710	78.7
	501–1000	124	5.7
	1001–2000	267	12.3
	>2000m	72	3.3

Note: a. For rural China, the standard of Per capita net income was RMB 7917. For urban China, the standard of Per capita net income was RMB 24565.