Table 1 Sample characteristics

Gender [female], n (%)

461 (22.2)

438 (22.0)

Age [years], mean/SD

66.6/9.5

66.5/9.5

Education, n (%)

  School education < = 9 years

1393 (67.1)

1344 (67.4)

  School education > 9 years

602 (29.0)

593 (29.7)

  Missing data

82 (3.9)

58 (2.9)

Marital status, n (%)

  Married

1607 (77.4)

1554 (77.9)

  Unmarried

455 (21.9)

428 (21.4)

?Missing data

15 (0.7)

13 (0.7)

Time since infarction [years], mean/SD

6.5/2.4

6.5/2.4

Reinfarction, n (%)

188 (9.1)

176 (8.8)

  ST-segment elevation MI

796 (38.3)

769 (38.6)

  Non-ST-segment elevation MI

1139 (54.8)

1090 (54.6)

  Bundle branch block

103 (5.0)

100 (5.0)

  Missing data

39 (1.9)

36 (1.8)

Acute treatment, n (%)

  No reperfusion treatment

249 (12.0)

233 (11.7)

  Coronary artery bypass grafting

312 (15.0)

301 (15.1)

  PTCA^a without stenting

82 (4.0)

77 (3.9)

  PTCA with stenting

1390 (66.9)

1342 (67.3)

  Thrombolysis

44 (2.1)

42 (2.1)

Diabetes, n (%)

  Yes

517 (24.9)

488 (24.5)

  No

1545 (74.4)

1507 (75.5)

  Missing data

15 (0.7)

-

Angina pectoris, n (%)

  Yes

352 (17.0)

330 (16.5)

  No

1725 (83.0)

1665 (83.5)

Hypertension, n (%)

  Yes

1593 (76.7)

1516 (76.0)

  No

484 (23.3)

479 (24.0)

Hyperlipidemia, n (%)

  Yes

1511 (72.8)

1523 (76.3)

  No

566 (27.2)

472 (23.7)

Smoking, n (%)

  Current smoker

723 (34.8)

701 (35.1)

  Ex-smoker

670 (32.3)

642 (32.2)

  Never smoker

646 (31.1)

615 (30.8)

  Missing data

38 (1.8)

37 (1.9)

Number of comorbidities, n (%)

  0

511 (24.6)

498 (25.0)

>0

1537 (75.4)

1479 (75.0)

  Missing data

29 (1.4)

18 (0.9)

Health status rating, n (%)

  Very good

190 (9.2)

189 (9.5)

  Good

884 (42.6)

866 (43.4)

  Moderate

759 (36.5)

727 (36.4)

  Bad

179 (8.6)

171 (8.6)

  Very bad

38 (1.8)

38 (1.9)

  Missing data

28 (1.3)

4 (0.2)