Estimates of Model Performance for 4 Prediction Models
| Discrimination | |||
| Model no | Model type | Apparent c-index | Corrected c-index* |
| 1 | Clinical model | 0.71 (0.64–0.79) | 0.67 (0.60–0.75) |
| 2 | + Subjective assessment 18F-FDG PET | 0.75 (0.68–0.82) | 0.72 (0.65–0.79) |
| 3 | + Conventional 18F-FDG PET features | 0.77 (0.70–0.84) | 0.73 (0.66–0.80) |
| 4 | + Comprehensive 18F-FDG PET features | 0.82 (0.75–0.88) | 0.77 (0.70–0.83) |
↵* Correction after internal validation for both optimism and bias from predictor selection process.
Data in parentheses are 95% confidence intervals.