Table 1

 Baseline demographics for patients at risk from acute respiratory distress syndrome and patients with established acute respiratory distress syndrome

ARDS(n = 35)At risk(n = 19)p Value95% CI
APACHE, acute physiology and chronic health evaluation; ARDS, acute respiratory distress syndrome; SAPS, simplified acute physiology score; SOFA, sequential organ failure assessment.
P:F ratio mm Hg (kPa)106 (92) (33.5 (12.1))155 (92) (14.9 (5.8))<0.00195–185 (12.5 to 24.4)
Lung injury score2.9 (0.6)1.2 (0.3)0.0011.3 to 1.9
SOFA score13.4 (3.7)6.7 (4.3)0.0014.1 to 9.2
APACHE II23.4 (6.9)21.7 (8.9)0.312−2.1 to 6.5
SAPS II52.0 (15.7)54.8 (12.8)0.550−12.0 to 6.4
Direct lung injury13 (37%)6 (32%)0.771
Indirect lung injury22 (63%)13 (68%)