TABLE 3.

Results of Poisson Regression Evaluating Association Between RBC Storage Age and Mortality

	RR (95% CI)	p
1–2 RBC units
Old blood	0.97 (0.72–1.32)	0.85
Age	1.01 (1.00–1.02)	0.01
ISS	1.04 (1.03–1.05)	<0.0001
Male gender	1.09 (0.79–1.51)	0.60
Units FFP	0.99 (0.91–1.08)	0.88
Head injury	1.75 (1.24–2.47)	0.002
Units RBC	1.29 (0.9–1.84)	0.17
Blunt mechanism of injury	0.55 (0.38–0.78)	0.001
≥3 RBC units
Old blood	1.57 (1.14–2.15)	0.01
Age	1.01 (1.01–1.02)	<0.0001
ISS	1.03 (1.02–1.03)	<0.0001
Male gender	1.33 (0.98–1.80)	0.07
Units FFP	0.96 (0.91–1.01)	0.16
Units platelets	0.87 (0.71–1.05)	0.15
Head injury	1.74 (1.26–2.40)	0.001
Units RBC	1.10 (1.06–1.13)	<0.0001
Blunt mechanism of injury	0.70 (0.50–0.99)	0.05