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.