TABLE 3.

Sensitivities, specificities, PPV, and NPV of phenotypic methods for detection of ESBL production with molecular identification as the reference method for E. coli isolates (n = 61)

Detection method	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
MicroScan	100.0	72.2	89.6	100.0
Phoenix	100.0	72.2	89.6	100.0
VITEK 2	81.4	100.0	100.0	69.2
DAM	100.0	83.3	93.5	100.0
DDS	97.7	100.0	100.0	94.7
Etest ESBL	97.7	94.4	94.4	97.7