| ACS risk score | Diabetes C-index (95% CI) | No diabetes C-index (95% CI) | Chronic renal failure C-index (95% CI) | No chronic renal failure C-index (95% CI) | Angina C-index (95% CI) | No angina C-index (95% CI) |
| PURSUIT5 | 0.74 (0.72 to 0.76) | 0.79 (0.79 to 0.81) | 0.71 (0.67 to 0.75) | 0.79 (0.78 to 0.80) | 0.77 (0.75 to 0.78) | 0.80 (0.79 to 0.82) |
| GUSTO-16 | 0.79 (0.76 to 0.82) | 0.80 (0.79 to 0.82) | 0.65 (0.56 to 0.73) | 0.80 (0.79 to 0.82) | 0.75 (0.71 to 0.78) | 0.80 (0.79 to 0.83) |
| GRACE In-hospital7 | 0.77 (0.76 to 0.78) | 0.81 (0.81 to 0.81) | 0.71 (0.68 to 0.74) | 0.80 (0.80 to 0.81) | 0.78 (0.77 to 0.80) | 0.82 (0.81 to 0.82) |
| GRACE 6-months8 | 0.76 (0.75 to 0.77) | 0.81 (0.80 to 0.81) | 0.69 (0.66 to 0.72) | 0.79 (0.79 to 0.80) | 0.76 (0.75 to 0.77) | 0.81 (0.81 to 0.82) |
| SRI10 | 0.74 (0.73 to 0.76) | 0.80 (0.79 to 0.81) | 0.69 (0.64 to 0.74) | 0.79 (0.79 to 0.80) | 0.75 (0.73 to 0.77) | 0.80 (0.79 to 0.81) |
| EMMACE11 | 0.76 (0.74 to 0.78) | 0.81 (0.80 to 0.81) | 0.70 (0.64 to 0.75) | 0.80 (0.79 to 0.81) | 0.75 (0.74 to 0.77) | 0.81 (0.80 to 0.82) |
EMMACE, Evaluation of the Methods and Management of Acute Coronary Events; GRACE, Global Registry of Acute Coronary Events; GUSTO-1, Global Utilisation of Streptokinase and Tissue Plasminogen Activator for Occluded Coronary Arteries; PURSUIT, Predictors of Outcome in Patients with Acute Coronary Syndromes without Persistent ST Segment Elevation; SRI, SRI, Simple Risk Index.