Table 2.
Performance of the models for early prediction of mortality based on Glasgow Coma Scale (GCS) value <= 8 (severe traumatic brain injury) at admission, baroreflex sensitivity (BRS) <= 1.8 ms/mm Hg or pressure reactivity index (PRx) >= 0.17 at 1.5 days after injury and the models for late prediction of mortality based on ‘unfavorable pattern’ of BRS or PRx > 0.3 estimated from total seven days after injury
| Early prediction of mortality | Late prediction of mortality | ||||
|---|---|---|---|---|---|
| GCS <= 8 | BRS <= 1.8 | PRx >= 0.17 | “Unfavorable pattern” of BRS | PRx > 0.3 | |
| SE performance metric |
100.00 (63.06–100.00) |
60.00 (14.66–94.73) |
60.00 (14.66–94.73) |
87.50 (47.35–99.68) |
62.50 (24.49–91.48) |
| SPE |
14.29 (3.05–36.64) |
84.21 (60.42–96.62) |
72.22 (46.52–90.31) |
80.95 (58.09–94.55) |
95.24 (76.18–99.88) |
| PPV |
30.77 (27.18–34.64) |
50.00 (22.08–77.92) |
37.50 (17.60–62.77) |
63.64 (41.09–81.45) |
83.33 (40.68–97.33) |
| NPV | 100.00 |
88.98 (72.88–95.97) |
86.67 (68.15–95.18) |
94.44 (72.87–99.08) |
86.96 (73.05–94.25) |
| ACC |
37.93 (20.69–57.74) |
79.17 (57.85–92.87) |
69.57 (47.08–86.79) |
82.76 (64.23–94.15) |
86.21 (68.34–96.11) |
SE sensitivity, SPE specificity, PPV positive predictive value, NPV negative predictive value, ACC accuracy
Data are presented as mean (95% confidence interval)