. Author manuscript; available in PMC: 2013 Apr 1.

Published in final edited form as: Crit Care Med. 2012 Apr;40(4):1129–1135. doi: 10.1097/CCM.0b013e3182376e9f

Table 6.

Multivariate model of predictors of nosocomial infection after injury

	Hazard Ratio	95% C.I.	P
Demographics
Age (per year)	1.00	0.99 – 1.01	0.86
Gender; Female	0.89	0.72 – 1.09	0.26
Injury Characteristics
AIS ≥3
Head	0.82	0.66 – 1.01	0.07
APACHE II (per point)	1.01	0.99 – 1.03	0.32
ISS (per point)	1.01	1.00 – 1.02	0.003
Surgery score	0.95	0.79 – 1.15	0.60
Resuscitation Parameters
RBC 1^st 24 hours (per liter)	1.035	0.997 - 1.075	0.0748
Crystalloid 1^st 24 hours (per liter)	0.999	0.985 - 1.104	0.9359
Outcome
Baseline MOF (per point)	1.05	1.01 – 1.08	0.006
Cumulative MOF (per point)	1.01	1.00 – 1.02	<0.001

AIS: Abbreviated injury scale score; APACHE: Acute physiology and chronic health evaluation score; ISS: Injury severity scale score; RBC: Red blood cell transfusion; MOF: Multiple organ failure score; CI: confidence interval