Comparison of predictive performance of different Cox survival models built with prognostic factors obtained pre- and postoperatively
| Prognostic Models | Harrell C | 95% CI | Somers D | 95% CI |
|---|---|---|---|---|
| Preoperative (age, rCBV median ≥ 5.195, ADC median < 0.799 × 10−3 mm2/s) | 0.77 | 0.71–0.83 | 0.61 | 0.45–0.77 |
| Postoperative (age, rCBV median ≥ 5.195, ADC median < 0.799 × 10−3 mm2/s, histologic grade) | 0.78 | 0.72–0.84 | 0.64 | 0.48–0.81 |
| Histologic grade | 0.67 | 0.61–0.73 | 0.35 | 0.22–0.48 |