Table 3 Demographic characteristics of study population (n = 1874)

Age-no. (%)

–

–

0.026^*

  < 60 year old

1137 (60.7)

36 (1.9)

–

  > 60 year old

691 (36.9)

10 (0.5)

–

Male-no. (%)

1212 (66.3)

33 (73.9)

0.28

Height-cm

165.7 ± 8.7

166.1 ± 8.1

0.80

Weight-kg

68.0 ± 12.4

67.7 ± 12.9

0.88

BMI

24.8 ± 6.5

24.4 ± 3.7

0.67

Blood group-no. (%)

–

–

0.34

 A

511 (28.1)

16 (34.8)

–

 B

607 (33.4)

18 (39.1)

–

 AB

188 (10.4)

2 (4.3)

–

 O

510 (28.4)

10 (21.7)

–

Existing risk factors-no. (%)

–

–

–

 Smoking

824 (45.1)

21 (47.8)

0.72

 Alcohol consumption

236 (12.9)

5 (10.9)

0.68

 Hypertension

860 (47.1)

15 (32.6)

0.052

 Hyperlipidemia

705 (38.6)

11 (23.9)

0.043^*

 Diabetes mellitus

342 (18.7)

6 (13.0)

0.33

 Chronic kidney disease

13 (0.7)

1 (2.2)

0.30

 Chronic liver disease

21 (1.2)

0 (0)

1.00

 Cerebrovascular events

39 (2.1)

1 (2.2)

1.00

 Chronic obstructive pulmonary disease

43 (2.4)

0 (0)

0.62

 History of general anesthesia

411 (22.5)

6 (13.0)

0.13

 History of cardiac infarction

320 (17.5)

7 (15.2)

0.68

 ASA status-no. / total no. (%)

–

–

0.48

  I

11 (0.61)

1 (2.2)

–

  II

533 (29.5)

16 (34.8)

–

  III

1167 (64.5)

27 (58.7)

–

  IV

97 (5.4)

2 (4.3)

–

 NYHA grade

–

–

0.53

  Lower than Grade 1

510 (27.9)

9 (20.0)

–

  Grade 1

177 (9.7)

7 (15.2)

–

  Grade 2

779 (42.7)

21 (45.7)

–

  Grade 3

340 (18.6)

9 (20.0)

–

  Grade 4

20 (1.1)

0 (0)

–

 Ejection fraction (%)

61.2 ± 8.7

62.3 ± 7.6

0.40

Duration of surgery-min

225.2 ± 82.4

195.0 ± 52.0

0.013^*

Cardiopulmonary Bypass-no. (%)

1321 (72.3)

30 (68.2)

0.95

Duration of CPB-min

106.2 ± 47.4

91.2 ± 40.0

0.071

Aortic clamping time-min

71.7 ± 32.1

62.6 ± 33.3

0.11