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Table 2 BMI distribution in different socio-demographic characteristics

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

  Mean ± SD median(25 ~ 75percentile) floor celling χ2/F P
Residence
 Rural 24.00 ± 3.55 23.71(21.49 ~ 26.14) 14.33 50.07 29.466 < 0.001
 Urban 24.35 ± 3.48 24.08(21.91 ~ 26.43) 15.63 52.82   
Areas
 North 23.88 ± 3.53 23.51(21.29 ~ 26.05) 14.33 52.82 43.596 < 0.001
 Central 24.37 ± 3.58 24.11(21.88 ~ 26.49) 15.31 50.07   
 South 23.96 ± 3.28 23.73(21.6 ~ 25.96) 15.64 40.03   
Gender
 Male 24.00 ± 3.36 23.8(21.62 ~ 26.08) 14.33 52.82 15.795 < 0.001
 Female 24.34 ± 3.63 24.03(21.73 ~ 26.45) 14.78 50.07   
Education
  ≤ 6 years 24.15 ± 3.53 23.87(21.66 ~ 26.19) 14.33 45.05 1.307 0.520
 >6 years & ≤ 9 years 24.22 ± 3.5 23.95(21.7 ~ 26.4) 15.63 50.07   
 >9 years 24.15 ± 3.47 23.98(21.82 ~ 26.2) 16.13 52.82 3.327 0.190
Physical activity
 Light 24.08 ± 3.67 23.83(21.49 ~ 26.14) 15.31 44.23   
 Moderate 24.18 ± 3.64 23.91(21.52 ~ 26.37) 15.63 52.82   
 High 24.22 ± 3.41 23.95(21.81 ~ 26.3) 14.33 50.07