| Risk factor | EuroSCORE coefficient | EuroSCORE odds ratio | NWQIP model odds ratio (95% CI) |
| Age | 0.0666354 | 1.07 | 1.04 (1.03 to 1.05) |
| Female sex | 0.3304052 | 1.4 | 1.8 (1.5 to 2.3) |
| Chronic pulmonary disease | 0.4931341 | 1.6 | 1.6 (1.3 to 2.0) |
| Extracardiac arteriopathy | 0.6558917 | 1.9 | 1.7 (1.3 to 2.2) |
| Neurological dysfunction disease | 0.841626 | 2.3 | NIM |
| Previous cardiac surgery | 1.002625 | 2.7 | 2.6 (1.9 to 3.6) |
| Serum creatinine | 0.6521653 | 1.9 | 3.9 (2.9 to 5.2) |
| Active endocarditis | 1.101265 | 3.0 | 5.1 (2.5 to 10.6) |
| Critical preoperative state | 0.9058132 | 2.5 | 4.9 (3.1 to 7.8) |
| Unstable angina | 0.5677075 | 1.8 | NIM |
| LV dysfunction moderate | 0.4191643 | 1.5 | NIM |
| LV dysfunction severe | 1.094443 | 3.0 | 2.4 (1.9 to 3.2) |
| Recent myocardial infarct | 0.5460218 | 1.7 | NIM |
| Pulmonary hypertension | 0.7676924 | 2.2 | NIM |
| Urgent surgery | NIM | NIM | 2.4 (2.0 to 3.0) |
| Emergency surgery | 0.7127953 | 2.0 | 4.3 (2.9 to 6.5) |
| Other than isolated CABG | 0.5420364 | 1.7 | 2.3 (1.8 to 2.9) * |
| 2.6 (2.0 to 3.4) † | |||
| Surgery on thoracic aorta | 1.159787 | 3.2 | 2.6 (2.0 to 3.4) † |
| Postinfarct septal rupture | 1.462009 | 4.3 | 2.6 (2.0 to 3.4) † |
EuroSCORE, European System for Cardiac Operative Risk Evaluation; NWQIP, North West Quality Improvement Programme; CI, confidence interval; NIM, not in model; LV, left ventricular; CABG, coronary artery bypass grafting.
*Combined CABG and valve surgery in NWQIP model.
†Other cardiac surgery in NWQIP model.