TABLE 2.
Risk factors for ciprofloxacin-resistant E. coli bacteremia of urinary origin (univariate analysis)
| Characteristic | Patients infected with ciproflaxacin-susceptible strains (n = 312) | Patients infected with ciprofloxacin-resistant strains (n = 32) | P (OR) |
|---|---|---|---|
| Age (yr [mean ± SDa]) | 65 ± 18.2 | 72 ± 13.7 | 0.06 |
| Sex (no. of males/no. of females) | 125/187 | 21/11 | 0.005 |
| No. (%) of patients with: | |||
| Complicated UTI | 78 (25) | 15 (47) | 0.014 (2.6) |
| Urinary catheter | 53 (17) | 18 (56) | <0.001 (6.2) |
| Prior antibiotic use | 16 (5) | 10 (31) | <0.001 (8.4) |
| Prior quinolone use | 5 (2) | 7 (22) | <0.001 (17) |
a
SD, standard deviation.