. Author manuscript; available in PMC: 2014 Aug 1.

Published in final edited form as: Crit Care Med. 2013 Aug;41(8):1992–2001. doi: 10.1097/CCM.0b013e31828a3f4d

TABLE 4.

Multivariable Model of Risk Factors for Inhospital Mortality

Characteristic	Multivariable Hazard Ratio	p
Tidal volume >8 mL/kg	2.52 (1.46–4.34)	<0.001

Acute respiratory distress syndrome	1.00 (0.66–1.51)	0.99

Glasgow Coma Scale score at presentation
13–15	Ref
5–12	0.85 (0.52–1.40)	0.54
3–4	1.69 (0.94–3.03)	0.08

Steroid use	0.65 (0.17–2.56)	0.54

Aspirin use	1.61 (1.08–2.39)	0.02

Daily burden of systemic inflammatory response syndrome	0.95 (0.91–0.99)	0.04