| Hospital | Observed in-hospital mortality (%) | Uncalibrated Logistic EuroSCORE (%) | Calibrated logistic EuroSCORE 2002–4 (%) | Calibrated logistic EuroSCORE 2002–5 (%) | NWQIP model (%) |
| All | 3.1 | 5.8 | 3.4 | 3.1 | 3.1 |
| 1 | 3.1 | 5.5 | 3.2 | 2.9 | 3.3 |
| 2 | 3.6 | 6.8 | 3.9 | 3.6 | 3.4 |
| 3 | 3.1 | 5.1 | 3.0 | 2.7 | 3.0 |
| 4 | 2.6 | 5.2 | 3.1 | 2.8 | 3.0 |
EuroSCORE, European System for Cardiac Operative Risk Evaluation; NWQIP, North West Quality Improvement Programme.