Multivariable logistic regression analysis for inhospital mortality of patients with trauma with ISS >16 (n=34764)
| OR (95% CI) | P value | |
| Age | 1.04 (1.03 to 1.04) | <0.001 |
| Gender | ||
| Male | 1.14 (1.05 to 1.23) | 0.001 |
| Mechanism of injury | ||
| Penetrating | 1.00 | – |
| Blunt | 1.27 (0.93 to 1.73) | 0.13 |
| Transportation | ||
| Ambulance | 1.00 | |
| Ambulance with doctors | 0.86 (0.73 to 1.01) | 0.90 |
| Helicopter | 0.70 (0.63 to 0.79) | 0.02 |
| Others* | 0.88 (0.64 to 1.20) | 0.83 |
| ISS | 1.05 (1.04 to 1.05) | <0.001 |
| GCS | 0.73 (0.73 to 0.74) | <0.001 |
| Systolic blood pressure | 0.99 (0.99 to 0.99) | <0.001 |
| Respiratory rate | 1.00 (1.00 to 1.01) | 0.06 |
| Whole-body CT | 0.91 (0.83 to 0.99) | 0.04 |
| Year | ||
| 2004 | 1.50 (1.22 to 1.85) | <0.001 |
| 2005 | 1.53 (1.25 to 1.88) | <0.001 |
| 2006 | 1.20 (0.98 to 1.48) | 0.08 |
| 2007 | 1.06 (0.90 to 1.24) | 0.78 |
| 2008 | 1.11 (0.95 to 1.29) | 0.25 |
| 2009 | 1.00 | – |
| 2010 | 0.95 (0.82 to 1.09) | 0.05 |
| 2011 | 0.85 (0.74 to 0.97) | <0.001 |
| 2012 | 0.82 (0.72 to 0.93) | <0.001 |
| 2013 | 0.71 (0.61 to 0.82) | <0.001 |
*Private car, unknown and others.
GCS, Glasgow Coma Scale; ISS, Injury Severity Score.