Table 4.

A) Multivariable logistic regressions for 6 and 24-hour mortality when controlling for site; B) Multivariable logistic regressions for 6 and 24-hour mortality excluding site since the effect was not statistically significant.

A.
For 6-hour mortality
Variable	Odds Ratio	95% CI	p-value
Age	1.01	0.99–1.03	0.0714
Total RI ≥4 units vs. <4 units	2.09	1.2–3.5	0.0056
RTS	0.74	0.63–0.87	0.0002
ISS	1.03	1.02–1.05	<0.0001
Penetrating injury	2.67	1.5–4.7	0.0008
Site*	0.56–1.74	0.18–8.9	0.7509
For 24-hour mortality
Variable	Odds Ratio	95% CI	p-value
Age	1.01	1.0–1.03	0.0184
Total RI ≥4 units vs. <4 units	1.54	1.0–2.375	0.0481
RTS	0.65	0.57–0.75	<0.0001
ISS	1.03	1.02–1.04	<0.0001
Penetrating injury	2.19	1.3–3.6	0.002
Site*	0.82–2.99	0.36–10.3	0.5511
B.
For 6-hour mortality
Variable	Odds Ratio	95% CI	p-value
Age	1.01	0.98–1.03	0.6507
Total RI ≥4 units vs. <4 units	2.21	1.09–4.51	0.0286
RTS	0.79	0.67–0.93	0.0049
ISS	1.05	1.03–1.07	<0.0001
Penetrating injury	4.11	1.80–9.38	0.0008
For 24-hour mortality
Variable	Odds Ratio	95% CI	p-value
Age	1.01	0.99–1.03	0.4245
Total RI ≥4 units vs. <4 units	1.76	0.96–3.22	0.0662
RTS	0.73	0.64–0.84	<0.0001
ISS	1.05	1.03–1.07	<0.0001
Penetrating injury	3.16	1.56–6.40	0.0014