Table 1 Sample characteristics

Age, years

69.57 ± 9.18

66.88 ± 9.44

0.54

Men, %

13 (68%)

13 (72%)

0.99

Ever smoker, %

17 (89%)

12 (66%)

0.15

BMI, kg⋅m^-2

28.53 ± 5.25

30.6 ± 5.99

0.27

Systolic BP, mm Hg

139.2 ± 23.27

132.4 ± 20.1

0.47

Diastolic BP, mm Hg

74.2 ± 11.66

80.1 ± 12.3

0.15

HDL cholesterol, mg/dl

44.12 ± 8.59

49.7 ± 15

0.38

Hypertension, %

17 (89.4%)

13 (72%)

0.18

Diabetes, %

5 (26%)

4 (22%)

0.69

Lipid-lowering medication, %

11 (57%)

12(66%)

0.85

Ankle-brachial index

0.48 ± 0.20

1.12 ± 0.07

<0.001

WBC count, μL

8.03 ± 2.34

7.26 ± 1.10

0.18