Table 2

Comparison of selected risk factors for healthcare-associated infection or colonization with multidrug-resistant Acinetobacter baumannii in the intensive care unit from 1st September to 31st October 2009
Risk factors No. (%) Odds ratio (95% CI) P value
Cases Controls
(n = 7) (n = 19)
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

CI confidence interval; ICU intensive care unit; IQR interquartile range; OR odds ratio; SD standard deviation; -, not measured; IQR interquartile range; ICU intensive care unit.

Xia et al.

Xia et al. BMC Infectious Diseases 2012 12:335   doi:10.1186/1471-2334-12-335

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