Table 2 Multivariable regression analysis of factors associated with the involvement of MDR pathogens in VAP (n = 192).

Enter method

Age

0.01

1.01

0.99 to 1.03

0.23

Charlson index

0.85

1.09

0.93 to 1.27

0.28

Coma on ICU admission

-0.83

0.44

0.19 to 1.03

0.06

ARDS before VAP

0.52

1.69

0.86 to 3.31

0.13

RRT before VAP

-0.42

0.66

0.31 to 1.42

0.29

Duration of hospitalisation before VAP

0.006

1.01

1.00 to 1.02

0.20

One antibiotic before VAP

0.06

1.06

0.39 to 2.92

0.90

Two antibiotic classes before VAP

0.85

2.34

0.82 to 6.71

0.11

More than two antibiotic classes before VAP

1.37

3.93

1.26 to 12.23

0.02

Constant

-2.72

Backward stepwise

Coma on ICU admission

-1.12

0.32

0.14 to 0.73

0.01

Two antibiotic classes before VAP

0.88

2.41

1.22 to 4.79

0.01

More than two antibiotic classes before VAP

1.50

4.47

2.15 to 9.31

< 0.001

Constant

-1.50