Table 2.
Multivariate analysis of risk factors associated with community-onset E. coli bloodstream infection
| Model | OR (95% CI) | P |
|---|---|---|
| Model with history of admission to any hospital | ||
| History of admission* | 1.6 (1.1–2.2) | 0.006 |
| Previous use of antimicrobials | ||
| Carbapenem | 2.7 (1.7–4.3) | < 0.001 |
| Lincosamide | 2.6 (1.3–5.3) | 0.006 |
| Aminoglycoside | 1.8 (1.1–2.7) | 0.014 |
| Extended-spectrum cephalosporin | 1.5 (1.1–2.2) | 0.031 |
| Model with history of admission to LTCH | ||
| History of admission to LTCH* | 3.8 (2.3–6.1) | < 0.001 |
| Previous use of antimicrobials | ||
| β-lactam/β-lactamase inhibitor | 1.4 (1.0–2.0) | 0.039 |
| Carbapenem | 2.9 (1.8–4.5) | < 0.001 |
| Lincosamide | 2.6 (1.3–5.1) | 0.008 |
| Aminoglycoside | 1.8 (1.1–2.8) | 0.015 |
| Extended-spectrum cephalosporin | 1.7 (1.3–2.4) | < 0.001 |
| 1st generation cephalosporin | 1.5 (0.96–2.4) | 0.075 |
Bold formatting indicates statistical significance. *These two variables were not analyzed simultaneously because of collinearity.
Abbreviations: LTCH, long-term care hospital; OR, odds ratio.