Table 1 Patients' characteristics.

Male

133

77.3%

Female

39

22.7%

Diabetes mellitus

59

34.3%

Arterial hypertension

118

68.6%

Chronic obstructive pulmonary disease

22

12.8%

Chronic renal failure

11

6.4%

Peripheral vascular disease

23

13.4%

Stroke

19

11%

Unstable angina

35

20.3%

Recent myocardial infarction (within 90 days)

46

26.7%

Older myocardial infarction

31

18%

Pulmonary hypertension

2

1.2%

Hyperlipidemia

45

26.2%

Smoking

69

40.1%

Alcohol abuse

13

7.6%