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Table 4 Baseline characteristics of study population stratified for the MetS and non-MetS in 2013

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 839 79 760  
Age (years) 37(30–45) 40(35–45) 37(29–45) 0.01
Ferritin (ng/mL) 301.1(210.9-426.6) 357.1 (260.0-526.1) 293.4(208.4-417.0) <0.01
SBP (mm Hg) 117(108–124) 120(110–126) 116(108–124) <0.01
DBP (mm Hg) 78(70–80) 80(74–84) 76(70–80) <0.01
Waist circumference (cm) 79.1(72.5-85.3) 87.0(82.8-90.4) 78.0(72.0-84.2) <0.01
Triglyceride (mmol/L) 1.01(0.72-1.46) 1.52(1.29-2.06) 0.95(0.69-1.38) <0.01
Glucose (mmol/L) 5.1(4.8-5.5) 5.3(5.0-5.6) 5.1(4.8-5.4) <0.01
HDL (mmol/L) 1.40(1.22-1.61) 1.21(1.11-1.32) 1.41(1.24-1.63) <0.01
BMI (kg/m2) 22.71(20.61-24.71) 25.46(23.74-27.27) 22.40(20.43-24.25) <0.01
Smoking status, yes, n (%)     0.35
Smoking 404(48.2%) 42(53.2%) 362(47.6%)  
Non-smoking 435(51.8%) 37(46.8%) 398(52.4%)  
Alcohol drinking, yes, n (%) 337(40.2%) 31(39.2%) 306(40.3%) 0.86
Physical activity, yes, n (%) 185(22.1%) 23(29.1%) 162(21.3%) 0.11
Family history of chronic disease, yes, n (%) 156(18.6%) 16(20.3%) 140(18.4%) 0.69
  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.