Table 2: Epidemiological features and statistical analysis of elderly patients with urinary tract infections produced by Escherichia coli.

Antimicrobial Resistance Phenotype
Epidemiological feature Non-Multi Resistant
(n: 433)
Multi-Resistant
(n: 335)
OR
(CI 95%)
Multi-Variate Analysis (p)
Female patients (F:M) 323 (2.9:1) 207 (1.6:1) 0,64 (0.45-0.92) 0.019
Diabetes mellitus (%) 25 (5.8) 68 (20.3) 4.56 (2.95-7.05) <0.0001
Recurrent urinary tract infections (%) 37 (8.5) 108 (32.2) 2.94 (1.94-4.45) <0.0001
Hospitalization during the last year (%) 53 (12.2) 123 (36.7) 2.37 (1.23-4.57) 0.0076
Chronic renal failure (%) 17 (3.9) 63 (18.8) 1.52 (0.52-4.38) 0.5987
Autoimmune disease (%) 8 (1.8) 25 (7.5) 0.25 (0.06-1.05) 0.0779
Exposure to antimicrobials in the last 3 months (%) 73 (16.9) 132 (39.4) 1.23 (0.64-2.37) 0.4671
Exposure to β-lactams in the last 3 months (%) 36 (8.3) 98 (29.3) 2.68 (1.36-5.26) 0.0027
Exposure to quinolones in the last 3 months (%) 52 (12) 93 (27.8) 1.05 (0.72-1.51) 0.8477

OR, odd ratio. CI, confidence interval. p values < 0.05 are showed in cursive letter. F:M. female/male patients ratio.