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Table 1 Demographic, metabolic and lifestyle characteristics of rural and urban 40–100 year-old Chinese adults

From: Prevalence and risk factors for dyslipidemia among adults in rural and urban China: findings from the China National Stroke Screening and prevention project (CNSSPP)

 Rural (N = 72,712)Urban (N = 64,233)Total (N = 13,6945)
No. (%)No. (%)No. (%)
Age
 Median (IQR)55.0 (49.0–62.0)56.0 (50.0–63.0)55.0 (49.0–63.0)
 40–4920,129 (27.7)15,922 (24.8)36,051 (26.3)
 50–5930,366 (41.8)27,494 (42.8)57,860 (42.3)
 60–6913,923 (19.1)12,560 (19.6)26,483 (19.3)
 70 and above8294 (11.4)8257 (12.8)16,552 (12.1)
Sex
 Men37,728 (51.9)32,835 (51.1)70,563 (51.5)
 Women34,984 (48.1)31,398 (48.9)66,382 (48.5)
History of CHD
 Yes65,704 (90.4)58,702 (91.4)12,4406 (90.8)
 No7008 (9.6)5531 (8.6)12,539 (9.2)
History of Dyslipidemia
 Yes44,834 (61.8)40,346 (64.2)85,180 (62.9)
 No27,722 (38.2)22,501 (35.8)50,223 (37.1)
History of Stroke
 Yes56,563 (77.8)51,846 (80.7)10,8409 (79.2)
 No16,150 (22.2)12,387 (19.3)28,537 (20.8)
Geographical Regions
bNorth39,102 (53.8)37,093 (57.7)76,195 (55.6)
 South33,611 (46.2)27,140 (42.3)60,751 (44.4)
cStroke Belt11,960 (16.4)11,689 (18.2)23,649 (17.3)
 Non-stroke Belt60,753 (83.6)52,544 (81.8)11,3297(82.7)
Socio- economic region
 Low- income20,395 (28.0)11,909 (18.5)32,304 (23.6)
 Middle- income23,853 (32.8)17,097 (26.6)40,950 (29.9)
 High-income28,464 (39.1)35,223 (54.8)63,691 (46.5)
  Han Nationality70,333 (96.7)62,106 (96.7)13,2439 (96.7)
BMIa
 Median (IQR)25.0 (22.8–27.6)25.3 (23.2–27.4)25.2 (23.0–27.5)
 Underweight (< 18.5 kg/m21050 (1.4)802 (1.2)1852 (1.4)
 Normal (18.5 - < 24.0)25,864 (35.6)21,237 (33.1)47,101 (34.4)
 Overweight (24.0 - < 28)30,690 (42.2)29,316 (45.6)60,006 (43.8)
 Obesity (≥28.0)15,108 (20.8)12,879 (20.1)27,987 (20.4)
Waist circumference
 Median (IQR)86.0 (80.0–93.0)86.0 (80.0–93.0)86.0 (80.0–93.0)
 Normal < 90/85 cm (M/W)31,077 (42.7)25,676 (40.9)56,753 (41.9)
 Central obese ≥90/85 cm (M/W)41,621 (57.3)37,083 (59.1)78,704 (58.1)
 Diabetes Mellitus20,529 (28.2)21,008 (32.7)41,537 (30.3)
 Hypertension46,155 (63.5)39,280 (61.2)85,435 (62.4)
 Drinking (Current)14,082 (19.4)12,084 (18.8)26,166 (19.1)
 Smoking (Current)25,677 (35.3)19,174 (29.9)44,851 (32.8)
 Physical inactivity23,455 (32.3)28,599 (44.5)52,054 (38.0)
Lipid variables: Median (IQR)
 TC mmol/l4.92 (4.22–5.64)4.88 (4.23–5.58)4.90 (4.23–5.61)
 HDL-C mmol/l1.35 (1.10–1.65)1.28 (1.08–1.55)1.31 (1.09–1.60)
 LDL-C mmol/l2.85 (2.20–3.42)2.85 (2.24–3.40)2.85 (2.21–3.41)
 Triglycerides mmol/l1.50 (1.04–2.16)1.51 (1.09–2.15)1.50 (1.06–2.15)
 Non-HDL-C mmol/l3.51 (2.80–4.24)3.53 (2.88–4.22)3.52 (2.84–4.23)
  1. Data are N (%) or median (IQR), interquartile range. Waist circumference has missing values of 1489 (1.1%);
  2. Non-HDL-C has missing values of 76 (0.1%). TC total cholesterol; HDL-C high-density lipoprotein; LDL-C low-density lipoprotein: triglycerides; M/W Men/ Women; BMIa calculated as weight in kilograms divided by height in meters squared: b,c Two different geographic zones of china