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Table 1 Participants’ sociodemographic characteristics (n (%) or mean ± SD)

From: Effect of socioeconomic characteristics and lifestyle on BMI distribution in the Chinese population: a population-based cross-sectional study

  Male
N = 4612(45.37)
Female
N = 5554 (54.63)
t/χ2 P
Residence (urban) 2410(52.25) 2971(53.49) 1.55 0.213
Areas
 North 927(20.10) 867(15.61) 35.04 < 0.001
 Central 2643(57.31) 3347(60.26)   
 South 1042(22.59) 1340(24.13)   
 Age 49.70 ± 14.63 49.40 ± 13.97 1.06 0.29
Education
  ≤ 6 years 1546(33.57) 2612(47.11) 192.26 < 0.001
 >6 years & ≤ 9 years 2704(58.72) 2621(47.28)   
 >9 years 355(7.71) 311(5.61)   
Fresh vegetable/fruit 533.98 ± 444.70 524.65 ± 408.08 1.10 0.27
Red meat 49.20 ± 96.55 26.70 ± 52.24 14.18 < 0.001
Salt 9.53 ± 8.15 9.69 ± 7.96 −0.97 0.33
Oil 56.77 ± 31.71 57.87 ± 31.39 −1.55 0.12
alcohol 35.25 ± 60.35 3.88 ± 17.63 34.10 < 0.001
Smoking everyday 2323(50.37) 55(0.99) 3428.31 < 0.001
Physical activity
 Light 824(17.87) 897(16.15) 12.24 0.002
 Moderate 1095(23.74) 1470(26.47)   
 High 2693(58.39) 3187(57.38)   
  1. SD Standard deviation