Table 1 Unadjusted pre- and operative baseline data

Age [years]

65.5 ± 8.7

66.1 ± 8.8

0.05*

Age group [n;%]

< 59

469 (23)

250 (22)

0.06

60-69

821 (41)

435 (39)

70-79

688 (34)

393 (35)

> 80

42 (2)

41 (4)

Logistic EuroSCORE [%, 95% CI)^A

3.2 (3.0 to 3.4)

3.2 (3.0 to 3.4)

0.16

No of distal anastomoses [n]

3 (3; 4)

Range (1-8)

3 (3; 4)

Range (1-6)

< 0.001*

Use of LIMA [%]

88.3

93.6

< 0.001*

Bypass time [min]

95 ± 31

84 ± 26

< 0.001*

Aortic cross clamp time [min]

57 ± 19

51 ± 17

< 0.001*

Reperfusion time [min]

34 ± 12

28 ± 12

< 0.001*

Ejection fraction [%]

62 (49; 70)

63 (50; 70)

0.12

Body mass index [kg × m^-2]

28.4 ± 3.8

28.2 ± 3.5

0.65*

Body surface area [m²]

1.97 ± 0.16

1.95 ± 0.14

< 0.001*

Hemoglobin [mg × dL^-1]

13.0 ± 1.5

13.1 ± 1.5

0.02*

Leukocytes [n × 10^-9 L]

7.9 (6.7; 9.3)

7.7 (6.6; 9.2)

0.16

Thrombocytes [n × 10^-9 L]

251 (210; 290)

248 (206; 292)

0.06

Arterial hypertension [%]

74.4

79.9

< 0.001*

COPD [%]

8.6

9.0

0.69

Atrial fibrillation [%]

3.8

3.3

0.48

Peripheral vascular disease [%]

6.9

6.0

0.32

Insulin-dependent diabetes [%]

27.5

28.8

0.45

Serum creatinine [mg × dL^-1]

1 (0.9; 1.2)

1 (0.9; 1.1)

0.15

Estimated GFR^B < 60 mL × min^-1 × 1,73 m^-2 [%]

16.4

18.4

0.14