Table 3.
ESBL-RA as a predictor of UTI caused by ESBL E. coli for the 31 women not exposed to antibiotics
| ESBL-RA value (%) | Concordance determined according toa: |
|||
|---|---|---|---|---|
| Sens | Spec | PPV | NPV | |
| 10–100 | 0.57 | 0.77 | 0.57 | 0.88 |
| 1–10 | 0.57 | 0.61 | 0.33 | 0.84 |
| 0.1–1 | 0.86 | 0.45 | 0.35 | 0.93 |
| 0.01–0.1 | 1.00 | 0.10 | 0.26 | 1.00 |
| 0.001–0.01 | 1.00 | 0.03 | 0.23 | 1.00 |
a
Concordance applied to women with urine and fecal samples that contained ESBL E. coli strains that displayed ≥95% similarity (see Materials and Methods). Sens, sensitivity; Spec, specificity; PPV, positive predictive value; NPV, negative predictive value.