Table 1.

Baseline characteristics and associations with mortality at hospital discharge

Variable	Summary measure	Association with in-hospital mortality OR (95% CI)	P value
Age (years), mean (SD)	49.7 (21.8)	1.03 (1.02 to 1.05)	<0.001
Male sex (%)	142 (72.8)	0.89 (0.43 to 1.82)	0.75
Injury Severity Score
<12	30 (15.4%)	Ref	Ref
12–25	52 (26.7%)	1.01 (0.27 to 3.78)	0.99
26–40	48 (24.6%)	2.41 (0.70 to 8.26)	0.16
>40	65 (33.3%)	4.17 (1.30 to 13.37)	0.016
Cause of injury
Motor car or truck crash	53 (27.2%)	4.19 (0.86 to 20.3)	0.075
Motorcycle crash	24 (12.3%)	1.07 (0.16 to 7.22)	0.94
Pedal cycle crash	9 (4.6%)	2.14 (0.25 to 18.50)	0.49
Pedestrian	37 (19.0%)	4.24 (0.84 to 21.51)	0.081
Low fall	11 (5.6%)	2.81 (0.39 to 20.45)	0.31
High fall	19 (19.7%)	3.46 (0.59 to 20.21)	0.17
Penetrating	25 (12.8%)	0.31 (0.03 to 3.75)	0.36
Other	18 (8.7%)	Ref	Ref
Prehospital time (hrs)	1.9 (1.3–2.9)	1.08 (0.85 to 1.37)	0.53
Initial systolic blood pressure (mm Hg), mean (SD)	70.3 (16.9)	0.96 (0.94 to 0.98)	<0.001
Initial pulse rate (beats/min), mean (SD)	97.7 (33.3)	0.99 (0.98 to 1.00)	0.028
Initial shock index ≥1	156 (80.0%)	1.40 (0.59 to 3.28)	0.45
FAST			0.36
Negative	125 (64.1%)	Ref
Positive	59 (30.3%)	1.40 (0.68 to 2.88)
Unknown or equivocal	11 (5.6%)	–
Intracranial bleeding or diffuse axonal injury	54 (27.8%)	3.65 (1.83 to 7.27)	<0.001

FAST, Focused Assessment with Sonography in Trauma.