All-cause mortality across severity of comorbidity
| Weighted Charlson Index | 30-day mortality | 90-day mortality | 1-year mortality* |
| 0 | 11.4% (95% CI 8.5% to 15.0%) | 13.7% (95% CI 11.6% to 18.9%) | 15.4% (95% CI 11.8% to 19.5%) |
| 1–2 | 20.6% (95% CI 17.1% to 24.4%) | 26.3% (95% CI 22.5% to 30.4%) | 31.6% (95% CI 27.4% to 36.1%) |
| 3–4 | 25.8% (95% CI 21.1% to 30.8%) | 30.6% (95% CI 25.7% to 35.9%) | 37.3% (95% CI 31.9% to 42.9%) |
| ≥5 | 20.9% (95% CI 16.4% to 26.0%) | 32.9% (95% CI 27.5% to 38.6%) | 40.4% (95% CI 34.6% to 46.4%) |
*Patients enrolled 2005–2017 (n=1429).