Table 4 Demographic characteristics of patients in each group

 Years mean ± SD

69.1 ± 14.1

69.9 ± 13.3

0.38

 Median (25^th, 75^th percentile)

71 (59,80)

72 (61,81)

Women (%)

45

44

0.85

 Myocardial infarction (12/47)^a

37

37

0.95

 Angina pectoris (10/62)

26

30

0.25

 Hypertension (9/51)

41

43

0.71

 Diabetes mellitus (8/42)

19

20

0.70

 Heart failure (10/68)

13

15

0.43

 Stroke (8/43)

8

10

0.25

 Peripheral artery disease (12/47)

5

3

0.06

 Chronic obstructive pulmonary disease (8/45)

8

9

0.51

 Renal disease (8/45)

7

7

0.71

 Cancer (10/41)

9

10

0.61

Smoking (%) (70/337)

15

20

0.08