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Two-Year Mortality Rates by Risk Score
| Risk Score | Development Cohort | Validation Cohort |
|---|---|---|
| 0 to 2 points (%) | 72/2,080 (3) | 60/1,183 (5) |
| 3 to 6 points (%) | 215/1,909 (11) | 159/1,303 (12) |
| 7 to 10 points (%) | 177/527 (34) | 139/391 (36) |
| C-statistic (ROC curve area) | 0.76 | 0.74 |
ROC, receiver operating characteristic.
