TABLE 3.
Comparison of patients with and those without A. baumannii clone Aa
| Patient characteristic | Value for patients:
|
P value | |
|---|---|---|---|
| With clone A (n = 44) | Without clone A (n = 43) | ||
| Mean age (yr) (SD) | 43.0 (14.9) | 48.9 (16.6) | 0.087 |
| No. of men (%) | 30 (68.2) | 31 (72.1) | 0.691 |
| Race [no. (%)] | |||
| African-American | 18 (40.9) | 18 (41.9) | 0.971 |
| White, non-Hispanic | 11 (25.0) | 9 (20.9) | |
| Hispanic, any race | 12 (27.3) | 13 (30.2) | |
| Asian | 3 (6.8) | 3 (7.0) | |
| Hospital acquired [no. (%)] | 39 (90.7) | 44 (100) | 0.052 |
| In ICU when organism was isolated [no. (%)] | 35 (81.4) | 40 (90.9) | 0.198 |
| ICU specialty [no. (%)] | 0.137 | ||
| Surgical | 25 (56.8) | 28 (56.0) | |
| Medical | 13 (29.5) | 5 (11.6) | |
| Neurosurgical | 6 (13.6) | 3 (7.0) | |
| Mean time from ICU admission to isolate isolation (days) (SD) | 17.8 (9.9) | 14.7 (10.4) | 0.114 |
| Mechanically ventilated at time of initial organism isolation [no. (%)] | 33 (62.8) | 27 (75.0) | 0.210 |
| Central bloodstream catheter present at time of initial organism isolation [no. (%)] | 35 (81.4) | 32 (72.7) | 0.337 |
| Surgical procedure prior to organism isolation [no. (%)] | 38 (86.4) | 34 (79.1) | 0.361 |
| Received expanded-spectrum cephalosporin 30 days prior to initial organism isolation [no. (%)] | 39 (88.6) | 31 (72.1) | 0.051 |
| Mean modified APACHE II score (SD) | 13.3 (7.0) | 13.9 (9.1) | 0.780 |
| Bloodstream infection [no. (%)] | 37 (84.1) | 7 (15.9) | <0.001 |
| Died during hospitalization [no. (%)] | 20 (45.5) | 8 (18.6) | 0.007 |
a
Characteristics of infected versus colonized patients were compared with a Student's t test or Wilcoxon rank sum test for continuous variables and with χ2 tests for categorical variables.