Table 1. Demographic and clinical characteristics of study population.

	PaO2/FiO2 >200	PaO2/FiO2 <200	Total
N	24	16	40
Age (yrs)	46.4±4.0	44.4±4.9	45.6±3.1
Gender (% female)	5/24 (21%)	4/16 (25%)	9/40 (23%)
BMI	27.9±1.7	28.3±2.3	28.1±1.3
% TBSA	17.7±3.6	18.6±4.3	18.3±2.9
Bronchoscopies*	2.6±0.3	3.8±0.6	3.1±0.3
Abnormal chest radiograph**	19/24 (79%)	15/16 (94%)	34/40 (85%)
Days on ventilator	23.6±5.0	34.1±8.0	27.8±4.4
Days in hospital	31.5±4.8	50.9±7.2	39.3±4.3
Mortality	4/24 (17%)	2/16 (13%)	6/40 (15%)

^*Within 1^st 14 days after injury.

^**Read by radiologist as having either infiltrates, edema, or atelectasis.