Table 1 Demographic and clinical data

Demographics

   Age (years) (mean ± standard deviation)

55 ± 16

   Gender (% male)

56

   Race/Ethnicity

Asian (%)

14

African American (%)

16

Hispanic (%)

16

Caucasian (%)

54

Conditions predisposing to acute lung injury

   Sepsis (%)

36

   Pneumonia (%)

34

   Aspiration of gastric content (%)

16

   Transfusion of blood products (%)

4

   Other^a (%)

10

Hospital mortality (%)

42