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. 2007 Feb 7;45(4):1167–1174. doi: 10.1128/JCM.01988-06

TABLE 4.

Sensitivities, specificities, PPV, and NPV of phenotypic methods for detection of ESBL production with molecular identification as the reference method for K. oxytoca isolates (n = 14)

Detection method Sensitivity (%) Specificity (%) PPV (%) NPV (%)
MicroScan 100.0 11.1 38.5 100.0
Phoenix 100.0 0.0 35.7 NDa
VITEK 2 60.0 88.9 75.0 80.0
DAM 80.0 55.6 50.5 83.3
DDS 80.0 88.9 80.0 88.9
Etest ESBL 100.0 22.2 41.7 100.0
a

ND, not determined.