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External validation of NTS-TBI
| Model | Number | Outcome | AUC | 95% CI | Hosmer-Lemeshow χ² | P-value |
|---|---|---|---|---|---|---|
| Mortality | ||||||
| NTS-TBI model 1 | 4,497 | 721 | 0.779 | 0.762–0.800 | 16.2 | 0.006 |
| NTS-TBI model 2 | 4,497 | 721 | 0.802 | 0.786–0.828 | 8.5 | 0.292 |
| Severe disability | ||||||
| NTS-TBI model 1 | 3,777 | 682 | 0.748 | 0.733–0.763 | 8.9 | 0.112 |
| NTS-TBI model 2 | 3,777 | 682 | 0.763 | 0.749–0.778 | 0.8 | 0.997 |
NTS-TBI, new prehospital trauma score for traumatic brain injury; AUC, area under the curve; CI, confidence interval.
