Table 2.

Baseline clinical factors for survivors and nonsurvivors with ARDS

	Survivors	Nonsurvivors	p
Female gender	50 (43%)	51 (52%)	0.27
Chronic liver disease	4 (4%)	9 (9%)	0.15
Sepsis without shock	44 (38%)	24 (24%)	0.039
Septic shock	53 (46%)	63 (64%)	0.013
Direct pulmonary injury	80 (70%)	65 (66%)	0.56
Steroids given during ARDS	39 (34%)	36 (36%)	0.77
Age	58 (18, 90)	72 (22, 97)	<0.0001
APACHE III	51 (3, 99)	66 (16, 131)	<0.0001
Units of RBCs transfused	1.0 (0, 31)	2.0 (0, 63)	<0.009

For dichotomous variables, the number of patients is listed with percent of total in parenthesis. For the continuous covariates age, APACHE III score, and number of units of RBCs transfused, the median is listed with the range in parentheses.

ARDS, acute respiratory distress syndrome; APACHE, Acute Physiology and Chronic Health Evaluation; RBC, red blood cell.