Table 5.

MODS analysis by model type.

Variable	Odds ratio	95% Confidence Interval
Mean PRBC age as a continuous variable	0.969	0.910 – 1.030
Number of transfused PRBC units	1.044	0.997 – 1.095
Patient age	1.028	0.999 – 1.058
ISS	1.046	1.011 – 1.085
Head AIS	0.868	0.644 – 1.147
Percentage of PRBC units <14 days old	0.999	0.984 – 1.017
Number of transfused PRBC units	1.048	1.001 – 1.100
Patient age	1.026	0.998 – 1.056
ISS	1.044	1.010 – 1.083
Head AIS	0.863	0.643 – 1.137
Percentage of PRBC units <21 days old	0.997	0.985 – 1.008
Number of transfused PRBC units	1.046	0.999 – 1.097
Patient age	1.027	0.999 – 1.057
ISS	1.045	1.010 – 1.083
Head AIS	0.869	0.645 – 1.146
PRBC age dichotomized at 14 days old	0.621	0.159 – 3.076
Number of transfused PRBC units	1.048	1.002 – 1.099
Patient age	1.027	0.998 – 1.057
ISS	1.046	1.011 – 1.085
Head AIS	0.858	0.639 – 1.131

ISS= Injury Severity Score; PRBC= Packed Red Blood Cell; AIS= Abbreviated Injury Score; MODS= Multiple Organ Dysfunction Score.