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Table 1 Clinical variables of the 105 coronary artery disease patients

From: Association of serum leptin levels with central arterial stiffness in coronary artery disease patients

Characteristic All participants (n = 105) Low Arterial Stiffness (n = 68) High Arterial Stiffness (n = 37) P
Age (years)a 65.55 ± 9.19 63.31 ± 8.92 69.68 ± 8.19 0.001*
Height (cm)a 161.03 ± 8.19 161.59 ± 7.44 160.00 ± 9.43 0.345
Body weight (kg)a 67.80 ± 11.78 67.79 ± 12.39 67.80 ± 10.75 0.998
Body mass index (kg/m2)a 26.05 ± 3.39 25.82 ± 3.39 26.47 ± 3.40 0.357
cfPWV (m/s)a 9.37 ± 2.71 7.81 ± 1.32 12.25 ± 2.20 <0.001*
Systolic blood pressure (mmHg)a 132.10 ± 18.67 127.47 ± 16.18 140.59 ± 20.13 <0.001*
Diastolic blood pressure (mmHg)a 72.56 ± 10.32 70.85 ± 10.07 75.70 ± 10.16 0.021*
Pulse pressure (mmHg)a 59.53 ± 16.64 56.62 ± 14.22 64.89 ± 19.43 0.014*
Total cholesterol (mg/dl)a 165.98 ± 35.80 170.15 ± 37.45 158.32 ± 31.59 0.106
Triglyceride (mg/dl)b 117.00 (89.50–162.00) 116.00 (90.75–184.50) 117.00 (89.00–152.00) 0.351
HDL-C (mg/dl)a 45.33 ± 12.24 46.54 ± 12.15 43.11 ± 12.28 0.171
LDL-C (mg/dl)a 95.73 ± 26.58 97.37 ± 26.47 92.73 ± 26.87 0.396
Fasting glucose (mg/dl)b 111.00 (96.50–142.50) 107.00 (97.00–133.75) 114.00 (95.50–163.00) 0.509
Blood urea nitrogen (mg/dl)b 16.00 (13.00–19.00) 15.50 (13.00–18.00) 16.00 (13.00–21.50) 0.162
Creatinine (mg/dl)b 1.10 (0.90–1.30) 1.00 (0.90–1.20) 1.20 (0.90–1.40) 0.143
Glomerular filtration rate (ml/min)a 70.55 ± 20.36 73.10 ± 17.63 65.92 ± 24.13 0.085
Total calcium (mg/dl)a 9.13 ± 0.36 9.15 ± 0.36 9.08 ± 0.35 0.328
Phosphorus (mg/dl)a 3.52 ± 0.53 3.53 ± 0.55 3.49 ± 0.48 0.739
Ca × P product (mg2/dL2)a 32.12 ± 5.15 32.32 ± 5.39 31.74 ± 4.73 0.585
Leptin (ng/ml)b 6.58 (3.41–18.97) 5.50 (2.80–13.77) 13.60 (5.07–52.43) 0.002*
  1. Data are expressed as mean ± standard deviation, except for triglycerides, fasting glucose, blood urea nitrogen, creatinine, C-reactive protein, and leptin, which are expressed as median and interquartile range (IQR)
  2. Abbreviations: cfPWV carotid-femoral pulse wave velocity, Ca × P product, calcium-phosphorus product, HDL-C, High density lipoprotein cholesterol, LDL-C Low density lipoprotein cholesterol, iPTH Intact parathyroid hormone
  3. aData were tested using Student’s t-test
  4. bData were testing using Mann-Whitney U test
  5. *P < 0.05 was considered statistically significant by Student’s t-test or Mann-Whitney U test