Table 2.

Risk factors for ciprofloxacin-resistant E. coli bacteremia of urinary origin (univariate analysis)

CharacteristicPatients infected with ciproflaxacin-susceptible strains (n = 312)Patients infected with ciprofloxacin-resistant strains (n = 32)P(OR)
Age (yr [mean ± SDa])65 ± 18.272 ± 13.70.06
Sex (no. of males/no. of females)125/18721/110.005
No. (%) of patients with:
 Complicated UTI78 (25)15 (47)0.014 (2.6)
 Urinary catheter53 (17)18 (56)<0.001 (6.2)
 Prior antibiotic use16 (5)10 (31)<0.001 (8.4)
 Prior quinolone use5 (2)7 (22)<0.001 (17)
  • a SD, standard deviation.