Table 1. Characteristics of the subjects surveyed in southern China in 2010 (N = 17437).

Variables	Total (N = 17437)		Urban (N = 6912)		Rural (N = 10525)
	n	%	n	%	n	%
Age groups
18–44	6552	37.58	2310	33.42	4242	40.30
45–59	6293	36.09	2515	36.39	3778	35.90
≥60	4592	26.33	2087	30.19	2505	23.80
Gender
Female	9268	53.15	3741	54.12	5527	52.51
Male	8169	46.85	3171	45.88	4998	47.49
Education
College or higher	836	4.79	388	5.61	448	4.26
Middle	7565	43.38	2902	41.98	4663	44.30
Primary	5727	32.84	2206	31.92	3521	33.45
Illiterate	3309	18.98	1416	20.49	1893	17.99
Income per capita
≥20000 Yuan	7284	41.77	3567	51.61	3717	35.32
10000–19999Yuan	4675	26.81	1600	23.15	3075	29.22
<10000 Yuan	5478	31.42	1745	25.25	3733	35.47
Type of smoke use
Nonsmoker	12206	70.00	4944	71.53	7262	69.00
Smoker	5231	30.00	1968	28.47	3263	31.00
Type of alcohol use
Nondrinker	12194	69.93	4731	68.45	7463	70.91
Drinker	5243	30.07	2181	31.55	3062	29.09
Diabetes
No	15908	91.23	6129	88.67	9779	92.91
Yes	1529	8.77	783	11.33	746	7.09
BMI
<23	8864	50.83	3441	49.78	5423	51.52
23–24.99	3837	22.00	1548	22.40	2289	21.75
≥25	4736	27.16	1923	27.82	2813	26.73
TG
<2.26	15166	86.98	6122	88.57	9044	85.93
≥2.26	2271	13.02	790	11.43	1481	14.07
TC
<6.22	16995	97.47	6700	96.93	10295	97.81
≥6.22	442	2.53	212	3.07	230	2.19
HDL-C
≥1.04	10203	58.51	4116	59.55	6087	57.83
<1.04	7234	41.49	2796	40.45	4438	42.17

BMI: Body mass index. TG: Triglycerides. TC: Total cholesterol. HDL-C: high density lipoprotein cholesterol.