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Table 1 Population characteristics based on different genders

From: The relationship between red blood cell distribution width and metabolic syndrome in elderly Chinese: a cross-sectional study

  Total Male Female T value P value
Case number 10,887 5795 5092   
Age (years) 67.92 ± 5.78 67.79 ± 5.94 68.00 ± 5.68 −1.879 0.060
BMI (kg/m2) 25.69 ± 3.43 25.75 ± 3.00 25.65 ± 3.65 1.592 0.111
Waist (cm) 87.93 ± 9.61 91.18 ± 8.70 86.08 ± 9.62 29.011** 0.000
SBP (mmHg) 138.68 ± 18.53 137.08 ± 18.20 139.59 ± 18.65 −7.100** 0.000
DBP (mmHg) 80.15 ± 10.42 82.59 ± 10.57 78.76 ± 10.08 19.264** 0.000
HDL (mmol/L) 1.45 ± 0.37 1.31 ± 0.32 1.53 ± 0.36 −33.727** 0.000
LDL (mmol/L) 3.40 ± 0.91 3.19 ± 0.83 3.52 ± 0.93 −19.976** 0.000
TC (mmol/L) 5.56 ± 1.04 5.18 ± 0.93 5.77 ± 1.03 −31.161** 0.000
TG (mmol/L) 1.58 ± 0.78 1.54 ± 0.79 1.60 ± 0.78 −3.784** 0.000
FG (mmol/L) 5.48 ± 1.02 5.56 ± 1.06 5.44 ± 0.99 6.084** 0.000
BUN (mmol/L) 5.20 ± 1.33 5.41 ± 1.37 5.08 ± 1.30 13.116** 0.000
TBIL (μmol/L) 12.33 ± 4.64 13.82 ± 5.06 11.49 ± 4.15 26.029** 0.000
CRP (mg/L) 0.65 ± 1.74 0.75 ± 2.54 0.59 ± 0.94 1.637 0.102
ESR (mm/hr) 6.53 ± 3.47 4.98 ± 2.31 7.53 ± 3.71 −32.221** 0.000
MCV (fL) 81.82 ± 21.46 83.29 ± 20.26 80.98 ± 22.07 5.675** 0.000
MCH (pg) 73.29 ± 105.02 68.50 ± 99.89 76.02 ± 107.73 −3.780** 0.000
MCHC(g/L) 286.18 ± 113.95 295.22 ± 108.82 281.03 ± 116.46 6.570** 0.000
RBC (×1012/L) 4.59 ± 0.37 4.88 ± 0.32 4.42 ± 0.28 78.690** 0.000
HB (g/L) 138.13 ± 11.29 148.92 ± 8.68 131.99 ± 7.29 109.328** 0.000
RDW (%) 12.73 ± 0.79 12.89 ± 0.79 12.64 ± 0.78 16.732** 0.000
WBC(×1012/L) 5.58 ± 1.18 5.82 ± 1.20 5.45 ± 1.14 16.470** 0.000
  1. BMI body mass index, SBP systolic blood pressure, DBP diastolic blood pressure, HDL high density lipoprotein, LDL low density lipoprotein, TC total cholesterol, TG triglycerides, FG fasting glucose, BUN blood urea nitrogen, TBIL total bilirubin, CRP C-reactive protein, ESR erythrocyte sedimentation rate, MCV mean corpuscular volume, MCH mean corpuscular hemoglobin, MCHC mean corpuscular hemoglobin concentration, RBC red blood cell, HB hemoglobin, RDW red blood cell distribution width, WBC white blood cell
  2. * P < 0.05, ** P < 0.01 (analyzed by independent sample’s t test)