Table 3.
Multivariable analysis of factors associated with 30-day mortality
| Variable | β-coefficientsa | OR (95% CI) | p value | Points |
|---|---|---|---|---|
| Age groups | ||||
| < 50 | Reference | 0 | ||
| 50–65 | 0.598 | 1.83 (1.34–2.47) | < 0.001 | 1 |
| 65–75 | 1.239 | 4.78 (3.43–6.66) | < 0.001 | 2 |
| > 75 | 2.198 | 10.35 (7.47–14.36) | < 0.001 | 4 |
| PRECOAG | 0.349 | 1.43 (1.10–1.85) | 0.007 | 1 |
| Pre-hospital intubation | 0.336 | 1.41 (1.08–1.83) | 0.012 | 1 |
| High Risk mechanism | 0.662 | 1.96 (1.56–2.47) | < 0.001 | 1 |
| PUPILS | ||||
| Normal | Reference | 0 | ||
| Unilateral mydriasis | 0.950 | 2.63 (1.97–3.51) | < 0.001 | 2 |
| Bilateral mydriasis | 3.217 | 26.38 (17.51–39.74) | < 0.001 | 6 |
| GCS ≤ 8 | 0.841 | 2.35 (1.79–3.10) | < 0.001 | 2 |
| MAIS-Head | 0.495 | 1.66 (1.30–2.12) | < 0.001 | 1 |
| MAIS-Thorax | − 0.271 | 0.76 (0.60–0.96) | 0.026 | − 1 |
| Haemodynamic failure | 1.148 | 3.21 (2.51–4.12) | < 0.001 | 2 |
| Respiratory failure | 0.708 | 2.06 (1.58–2.67) | < 0.001 | 1 |
| Coagulopathy | 0.567 | 1.78 (1.36–2.33) | < 0.001 | 1 |
| Mechanical ventilation | 0.580 | 1.80 (1.39–2.34) | < 0.001 | 1 |
| Massive haemorrhage | 0.452 | 1.58 (1.10–2.27) | < 0.001 | 1 |
Logistic regression. Derivation set (n = 5976)
PRECOAG, prior treatment with antiplatelets or anticoagulants; GCS, Glasgow Coma Score; AIS, Abbreviated Injury Scale; MAIS, AIS ≥ 3
aRegression coefficient multiplied with a shrinkage factor (bootstrapping procedure) of 0.98