TABLE 2.
Results of the case-control study
| Characteristic | Controls (n = 14) | Cases (n = 7) | P value | Odds ratio (95% CIa) |
|---|---|---|---|---|
| Male (no. [%]) | 10 (70) | 6 (86) | 1.00 | |
| Age (yr [mean ± SD]) | 64 ± 19.3 | 52 ± 13.3 | 0.120 | |
| APACHE score at ICU admission (mean ± SD) | 22.3 ± 11.09 | 26.4 ± 5.77 | 0.274 | |
| Admission | ||||
| Time in hospital before time in ICU (days [mean ± SD]) | 9.6 ± 26.30 | 4.4 ± 9.55 | 0.524 | |
| No. (%) of patients immediately admitted to ICU | 6 (43) | 3 (43) | 0.659 | |
| Duration of ICU admission (days [mean ± SD]) | 7.3 ± 5.20 | 17.0 ± 14.33 | 0.127 | |
| Duration of hospital admission (days [mean ± SD]) | 33.7 ± 27.47 | 31.1 ± 19.18 | 0.806 | |
| Specialty (no. [%] of patients) | ||||
| Surgery | 8 (57) | 4 (57) | 1.00 | |
| Internal medicine | 3 (21) | 1 (14) | 1.00 | |
| Neurosurgery | 3 (21) | 2 (29) | 1.00 | |
| Admission to ICU unitb(no. [%] of patients) | ||||
| A | 7 (50) | 7 (100) | 0.047 | - |
| B | 3 (21) | 1 (14) | 1.00 | |
| C | 6 (43) | 3 (43) | 1.00 | |
| Artificial ventilation | ||||
| No. [%] of patients | 8 (57) | 7 (100) | 0.061 | |
| Duration (days [mean ± SD]) | 3.9 ± 4.69 | 11.3 ± 12.46 | 0.389 | |
| Catheters (no. [%] of patients) | ||||
| Urinary | 14 (100) | 7 (100) | ||
| Arterial | 10 (71) | 6 (86) | 0.624 | |
| Central venous | 7 (54) | 6 (86) | 0.173 | |
| Drains (no. [%] of patients) | 2 (14) | 5 (71) | 0.017 | 15.00 (1.63-138.16) |
| Open wounds (no. [%] of patients) | 0 (0) | 3 (43) | 0.026 | |
| Operations | ||||
| No. (%) of patients operated upon | 9 (64) | 6 (86) | 0.612 | |
| No. of operations (mean ± SD) | 0.9 ± 1.07 | 2.3 ± 1.38 | 0.046 | |
| No. (%) of patients operated on in OR-A or OR-B | 2 (14) | 6 (86) | 0.003 | 36.00 (2.69-481.23) |
| Antibiotic use (no. [%] of patients) | 9 (64) | 7 (100) | 0.123 | |
| Mortality during hospital admission (no. [%] of patients) | 3 (21) | 4 (57) | 0.156 |
a
CI, confidence interval.
b
Admission to more than one ICU is possible.