Table 4 The sensitivity and specificity rates of four phenotypic ESBL detection methods compared to the reference method of genotyping
Sensitivity (%) | Specificity (%) | ||
|---|---|---|---|
ESBL screening test | CPD or CTX or CAZ | 89.8 | 61.8 |
CPD | 88.7 | 63.6 | |
CTX | 90.1 | 62.1 | |
CAZ | 84.5 | 64.7 | |
CFM | 87.7 | 64.7 | |
Double-disk synergy test | CPD or CTX or CAZ | 84.3 | 71.9 |
CPD | 63.5 | 75.8 | |
CTX | 78.3 | 72 | |
CAZ | 64.2 | 71.9 | |
CFM | 75.4 | 75.8 | |
Disk replacement test | CPD or CTX or CAZ | 85.5 | 64 |
CPD | 63.1 | 70.8 | |
CTX | 80.5 | 65.2 | |
CAZ | 70. | 70.4 | |
CFM | 73 | 70 | |
Vitek 2 ESBL test | 67.1 | 100 |