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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)
 40–49 20,129 (27.7) 15,922 (24.8) 36,051 (26.3)
 50–59 30,366 (41.8) 27,494 (42.8) 57,860 (42.3)
 60–69 13,923 (19.1) 12,560 (19.6) 26,483 (19.3)
 70 and above 8294 (11.4) 8257 (12.8) 16,552 (12.1)
Sex
 Men 37,728 (51.9) 32,835 (51.1) 70,563 (51.5)
 Women 34,984 (48.1) 31,398 (48.9) 66,382 (48.5)
History of CHD
 Yes 65,704 (90.4) 58,702 (91.4) 12,4406 (90.8)
 No 7008 (9.6) 5531 (8.6) 12,539 (9.2)
History of Dyslipidemia
 Yes 44,834 (61.8) 40,346 (64.2) 85,180 (62.9)
 No 27,722 (38.2) 22,501 (35.8) 50,223 (37.1)
History of Stroke
 Yes 56,563 (77.8) 51,846 (80.7) 10,8409 (79.2)
 No 16,150 (22.2) 12,387 (19.3) 28,537 (20.8)
Geographical Regions
bNorth 39,102 (53.8) 37,093 (57.7) 76,195 (55.6)
 South 33,611 (46.2) 27,140 (42.3) 60,751 (44.4)
cStroke Belt 11,960 (16.4) 11,689 (18.2) 23,649 (17.3)
 Non-stroke Belt 60,753 (83.6) 52,544 (81.8) 11,3297(82.7)
Socio- economic region
 Low- income 20,395 (28.0) 11,909 (18.5) 32,304 (23.6)
 Middle- income 23,853 (32.8) 17,097 (26.6) 40,950 (29.9)
 High-income 28,464 (39.1) 35,223 (54.8) 63,691 (46.5)
  Han Nationality 70,333 (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/m2 1050 (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 Mellitus 20,529 (28.2) 21,008 (32.7) 41,537 (30.3)
 Hypertension 46,155 (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 inactivity 23,455 (32.3) 28,599 (44.5) 52,054 (38.0)
Lipid variables: Median (IQR)
 TC mmol/l 4.92 (4.22–5.64) 4.88 (4.23–5.58) 4.90 (4.23–5.61)
 HDL-C mmol/l 1.35 (1.10–1.65) 1.28 (1.08–1.55) 1.31 (1.09–1.60)
 LDL-C mmol/l 2.85 (2.20–3.42) 2.85 (2.24–3.40) 2.85 (2.21–3.41)
 Triglycerides mmol/l 1.50 (1.04–2.16) 1.51 (1.09–2.15) 1.50 (1.06–2.15)
 Non-HDL-C mmol/l 3.51 (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