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Table 1 General characteristics of study population stratified for MetS and non-MetS in the cross-sectional study

From: High serum ferritin level is an independent risk factor for metabolic syndrome in a Chinese male cohort population

  Total MetS Non-MetS p
No. of subjects 2417 307 2110  
Age (years) 36(29–44) 43(35–48) 35(28–43) <0.01
Ferritin (ng/mL) 316.8(221.4-459.9) 447.4(294.1-612.4) 302.4(215.0-435.8) <0.01
SBP (mm Hg) 120(110–126) 130(120–140) 116(108–122) <0.01
DBP (mm Hg) 78(70–80) 86(80–90) 76(70–80) <0.01
Waist circumference (cm) 80.5(73.4-87.5) 92.4(88.0-95.9) 79.0(72.5-85.5) <0.01
Triglycerides (mmol/L) 1.13(0.78-1.76) 2.50(1.88-3.69) 1.03(0.74-1.49) <0.01
Glucose (mmol/L) 5.2(4.8-5.6) 5.8(5.4-6.2) 5.1(4.8-5.5) <0.01
HDL (mmol/L) 1.35(1.18-1.57) 1.16(1.01-1.38) 1.38(1.21-1.59) <0.01
BMI (kg/m2) 23.08(20.80-25.52) 27.05(25.06-28.74) 22.62(20.55-24.78) <0.01
Smoking status, yes, n (%) 1248(51.6%) 173(56.4%) 1075(50.9%) 0.08
Alcohol drinking, yes, n (%) 972(40.2%) 144(46.9%) 828(39.2%) 0.01
Physical activity, yes, n (%) 618(25.6%) 90(29.3%) 528(25.0%) 0.10
Family history of chronic disease, yes, n (%) 485(20.1%) 85(27.7%) 400(19.0%) <0.01
  1. Data are presented as median (25 percenile, 75 percentile) or counts (percent).
  2. The Chi-square test for categorical variables and The Mann-Whitrey U test for continuous variables.
  3. SBP, systolic blood pressure; DBP, diastolic blood pressure; HDL, high density lipoprotein cholesterol; BMI, body mass index; MetS, metabolic syndrome.