Table 2 Comparison of selected risk factors for healthcare-associated infection or colonization with multidrug-resistant Acinetobacter baumannii in the intensive care unit from 1 ^st September to 31 ^st October 2009

Age, y (mean (SD))

67.1 (22.9)

67.2 (16.9)

-

0.99

Male

5 (71.4)

12 (63.2)

1.46 (0.22–9.62)

1

Hospital stay, days [median (IQR)]

7 (4–61)

9 (3–47)

-

1

ICU stay, days [median (IQR)]

6 (4–8)

3 (2–6)

-

0.001

Blood transfusion

5 (71.4)

13 (68.4)

1.15 (0.17–7.74)

1

Mechanical ventilation

6 (85.7)

16 (84.2)

1.13 (0.10–13.04)

1

Bedside diagnostic ultrasonography

6 (85.7)

5 (41.7)

16.8 (1.60–176.23)

0.02

Bedside chest X-ray

7 (100.0)

4 (36.4)

-

<.001

Bronchofiberscopy

6 (85.7)

4 (21.1)

22.50 (2.07–244.84)

0.005

Electrocardiography

1 (14.3)

3 (15.8)

0.89 (0.08–10.30)

1

Venipuncture

7 (100.0)

12 (63.2)

-

0.13

Gastric lavage

7 (100.0)

12 (63.2)

-

0.13

Urinary catheterization

6 (85.7)

19 (100.0)

-

0.27

Hemodialysis

3 (42.9)

2 (10.5)

6.38 (0.78–51.78)

0.10

Presence of central line

2 (28.6)

2 (10.5)

3.40 (0.38–30.66)

0.29

Surgical operation

3 (42.9)

4 (36.4)

2.81 (0.44–18.06)

0.34

Septic shock

4 (57.1)

1 (5.3)

24.00 (1.95–295.06)

0.01

Multiple organ failure

3 (42.9)

1 (5.3)

13.50 (1.10–165.89)

0.05

Pulmonary diseases

6 (85.7)

8 (42.1)

8.25 (0.82–82.67)

0.08

Renal diseases

5 (71.4)

3 (15.8)

13.33 (1.71–103.75)

0.01

Fluoroquinolone administration

2 (28.6)

3 (15.8)

2.13 (0.27–16.60)

0.59

Carbapenem administration

5 (71.4)

1 (5.3)

45.00 (3.35–603.99)

0.002