Without VAP (n = 23)

With VAP (n = 22)

p

Age (year)

64.26 ± 19.08

66.27 ± 18.95

0.716

Gender (f/m)

9/14

14/8

0.100

Apache II

22.83 ± 8.37

28.82 ± 12.67

0.080

Duration of mechanical ventilation (days)

11.17 ± 11.34

27.77 ± 23.53

P < 0.001

Length of stay in ICU (days)

15.96 ± 15.36

31.14 ± 22.87

0.001**