Table 1.
Demographics for all patients and stratified according to quartiles of the SOFA score
| Demographics, Procedures, models & outcome | All patients | Q1 [SOFA 0–4] | Q2 [SOFA 5–6] | Q3 [SOFA 7–8] | Q4 [SOFA 9–22] |
|---|---|---|---|---|---|
| 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 scorea (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 |
All patient characteristics showed unequal distribution among the subgroups based on SOFA quartiles (P < 0.001). a The APACHE III score is a part of the APACHE IV model