Table 4.

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.