Table 1.
Demographics and risk factors in patients with bloodstream infections caused by Acinetobacter baumannii
| Patient characteristic | Data for subjects with BSI caused by: |
OR | 95% CI | P value | |
|---|---|---|---|---|---|
| CASR A. baumannii (n = 68) | Non-CASR A. baumannii (n = 206) | ||||
| Demographics | |||||
| Mean age, yr, ±SD | 62.5 ± 16.4 | 52 ± 25 | <0.001 | ||
| Age of >60 yr, no. (%) | 37 (54) | 81 (39) | 1.84 | 1.06–3.20 | 0.029 |
| Sex (male), no. (%) | 39 (57) | 94 (46) | 1.60 | 0.92–2.78 | 0.094 |
| Primary infection, no. (%) | 67 (98.5) | 203 (98.5) | 1 | 0.10–9.87 | 1 |
| Ethnicity (African American), no. (%) | 53 (78) | 151 (73) | 1.30 | 0.67–2.46 | 0.44 |
| Admitted from home, no. (%) | 43 (63) | 127 (62) | 1.07 | 0.60–1.88 | 0.81 |
| Comorbidity scores, median (interquartile range) | |||||
| Charlson's index on admission | 6 (2.5–8.5) | 4 (2–7) | 0.08 | ||
| McCabe score on admission | 2 (1.5–2) | 2 (2–3) | 0.0001 | ||
| Comorbid conditions, no. (%) | |||||
| Admitted in rapidly fatal condition | 17 (25) | 17 (8) | 3.70 | 1.76–7.76 | <0.001 |
| Positive A. baumannii blood culture after 72 h of admission | 50 (74) | 99 (48) | 2.97 | 1.62–5.44 | <0.001 |
| Directly admitted to ICU | 30 (44) | 55 (27) | 2.16 | 1.22–3.83 | 0.007 |
| Central line insertion prior to PBCa | 11 (16) | 49 (24) | 0.62 | 0.30–1.27 | 0.18 |
| Foley catheter insertion prior to PBC | 9 (13) | 19 (9) | 1.5 | 0.64–3.50 | 0.34 |
| Intubation prior to PBC | 39 (57) | 62 (30) | 3 | 1.77–5.50 | <0.001 |
a
PBC, positive blood culture.