Table 1 Demographics for all patients and stratified according to quartiles of the SOFA score

N

36,632

13,039

5486

11,848

6259

Age (mean; sd)

66.6 (11.4)

65.6 (11.9)

65.9 (11.1)

67.3 (10.7)

68.2 (11.3)

Male (%)

70.7

70.3

71

71

71

BMI (mean; sd)

27.2 (4.5)

27.2 (4.6)

27.4 (4.5)

27.1 (4.3)

26.8 (4.5)

Renal Insufficiency (%)

3.2

1.8

2

2.5

8.7

Emergency Surgery (%)

5.3

4.3

4.9

4.8

8.8

CABG (%)

51.6

56.1

58.3

51.1

37.3

Valve surgery Only (%)

24.9

24.5

22.7

25.3

26.9

Valve surgery and CABG (%)

11.9

7.6

9.2

14.1

18.9

Aorta surgery Only (%)

4.4

4.9

3.9

3.7

5.2

Myocardial surgery only (%)

1.4

1.8

0.9

1.2

1.5

Combination surgery (%)

5.8

5.2

5

4.6

10.3

Apache IV predicted mortality (%)

3

1.6

2.0

2.6

7.9

Apache III score^a (mean; sd)

47 (16.9)

41 (13.4)

44.8 (13.6)

47.6 (14.6)

60.4 (21.8)

Apache II predicted mortality (%)

7.6

5.5

6.6

7.6

13

Apache II score (mean; sd)

14 (4.6)

12.2 (3.7)

13.5 (3.8)

14.5 (4.0)

17.3 (5.8)

SAPS II predicted mortality (%))

12.8

8.5

10.8

12.9

23.1

SAPS II score (mean; sd)

29.4 (9.3)

25.7 (7.0)

28.2 (7.5)

30.1 (7.9)

36.7 (12.5)

MPM₂₄-II predicted mortality (%)

13.5 (8.9)

11.4 (7.5)

11.4 (7.1)

14.2 (7.4)

18.7 (12.5)

ICU mortality (%)

1.3

0.1

0.2

1

5.4

Hospital mortality (%)

2.2

0.6

0.8

1.8

7.6