Table 1 Baseline characteristics of the study population (n = 15,639)

Male sex

3,990 (81.2%)

5914 (75.3%)

2308 (56.4%)

 < 0.001

Age (years)

67.63 ± 10.12

66.11 ± 9.91

65.60 ± 9.91

 < 0.001

Hypertension

2305 (46.9%)

4225 (53.8%)

2057 (65.5%)

 < 0.001

Diabetes

1923 (39.1%)

3110 (41.0%)

1350 (43.5%)

 < 0.001

Dyslipidemia

2548 (51.8%)

4381 (57.8%)

2057 (66.5%)

 < 0.001

Smoking status

 < 0.001

 Current smoker

1017 (20.7%)

1290 (16.9%)

465 (14.8%)

 Former smoker

870 (17.7%)

1297 (17.1%)

498 (15.8%)

Opium Consumption

 < 0.001

 Current abuser

664 (13.5%)

883 (11.3%)

298 (9.5%)

 Former abuser

142 (2.9%)

222 (2.8%)

75 (2.4%)

Previous MI

 < 0.001

  < 24 h

189 (3.6%)

253 (3.2%)

116 (2.8%)

 1–7 days

374 (7%)

524 (6.7%)

226 (5.5%)

 8–21 days

395 (7.4%)

517 (6.6%)

236 (5.8%)

  > 21 days

0 (0%)

0 (0%)

0 (0%)

Carotid Stenosis

0.308

 25–50%

28 (0.6%)

29 (0.5%)

18 (0.6%)

 51–75%

19 (0.4%)

17 (0.3%)

7 (0.2%)

  > 75%

38 (0.8%)

59 (1%)

32 (1.1%)

Graft numbers

3 (3–4)

3 (3–4)

3 (3–4)

 < 0.001

 COPD

172 (3.5%)

251 (3.3%)

121 (3.9%)

0.191

 Cerebrovascular accident

304 (6.2%)

474 (6.2%)

188 (6.0%)

0.321

 Family History of IHD

1812 (33.9%)

2863 (36.4%)

1683 (41.3%)

 < 0.001

 HDL-C (mg/dl)

37 (37–38)

36 (36–37)

37 (37–38)

 < 0.001

 LDL-C (mg/dl)

89 (88–90)

90 (90–91)

92 (91–94)

 < 0.001

 Ejection Fraction

47.19 ± 9.21

47.93 ± 8.69

48.61 ± 8.12

 < 0.001

 eGFR

69.60 ± 21.89

80.32 ± 25.14

94.46 ± 31.43

 < 0.001