Table 2.

Univariable and multivariable logistic regression analyses of mortality

Variable	Univariable		Multivariable 1		Multivariable 2
	OR (95% CI)	p-value	OR (95% CI)	p-value	OR (95% CI)	p-value
Age (years)	1.042 (1.040–1.043)	< 0.001	1.050 (1.047–1.053)	< 0.001	1.050 (1.047–1.053)	< 0.001
Female	0.616 (0.584–0.650)	< 0.001	0.787 (0.712–0.869)	< 0.001	0.791 (0.717–0.873)	< 0.001
Trauma mechanism
Motor vehicle collision	Reference
Fall	0.637 (0.603–0.674)	< 0.001	1.076 (0.962–1.202)	0.199	1.078 (0.965–1.204)	0.185
Blunt injury	0.103 (0.091–0.117)	< 0.001	0.457 (0.371–0.563)	< 0.001	0.462 (0.375–0.568)	< 0.001
Penetrating injury	0.154 (0.130–0.183)	< 0.001	0.678 (0.504–0.913)	0.499	0.676 (0.502–0.909)	0.010
Othera	0.294 (0.273–0.317)	< 0.001	0.631 (0.548–0.727)	< 0.001	0.629 (0.546–0.725)	< 0.001
Vital signs
SBP (mmHg)	0.970 (0.969–0.970)	< 0.001	0.989 (0.987–0.990)	< 0.001	0.988 (0.987–0.990)	< 0.001
DBP (mmHg)	0.971 (0.970–0.972)	< 0.001	1.002 (1.001–1.003)	< 0.001	1.002 (1.001–1.003)	< 0.001
HR (beats/min)	0.989 (0.988–0.991)	< 0.001	1.003 (1.002–1.004)	< 0.001	1.003 (1.002–1.004)	< 0.001
RR (breath/min)	1.005 (1.005–1.005)	< 0.001	1.007 (1.005–1.008)	< 0.001	1.007 (1.006–1.008)	< 0.001
BT (℃)	1.003 (1.002–1.003)	< 0.001	1.000 (0.999–1.001)	0.737
GCS	0.565 (0.561–0.570)	< 0.001	0.637 (0.630–0.644)	< 0.001	0.637 (0.630–0.644)	< 0.001
EMR-ISS	1.073 (1.072–1.074)	< 0.001	1.032 (1.030–1.035)	< 0.001	1.032 (1.030–1.035)	< 0.001

^aOther contains the low-frequency injury mechanisms, such as explosions or foreign bodies

BT, body temperature; CI, confidence interval; DBP, diastolic blood pressure; EMR-ISS, excess mortality ratio–adjusted Injury Severity Score; GCS, Glasgow Coma Scale; HR, heart rate; OR, odds ratio; RR, respiratory rate; SBP, systolic blood pressure