Table 5.
Comparison of discriminative power of NTS-TBI and RTS
| Model | AUC |
Difference of AUC with RTS |
||||
|---|---|---|---|---|---|---|
| Value | 95% CI | Estimate | 95% CI | P-value | ||
| Mortality | ||||||
| RTS | 0.819 | 0.799–0.839 | Reference | |||
| NTS-TBI model 1 | 0.833 | 0.815–0.852 | 0.013 | 0.004 | 0.022 | < 0.01 |
| NTS-TBI model 2 | 0.852 | 0.835–0.869 | 0.032 | 0.021 | 0.043 | < 0.01 |
| Severe disability | ||||||
| RTS | 0.761 | 0.737–0.785 | Reference | |||
| NTS-TBI model 1 | 0.772 | 0.749–0.796 | 0.012 | -0.002 | 0.026 | 0.09 |
| NTS-TBI model 2 | 0.784 | 0.761–0.807 | 0.023 | 0.008 | 0.038 | < 0.01 |
NTS-TBI, new prehospital trauma score for traumatic brain injury; RTS, Revised Trauma Score; AUC, area under the curve; CI, confidence interval.