Table 2 Phenotypic tests for detection of E. coli-producing ESBL (n = 246)
` | Percentage of positive (%) | Percentage of negative (%) | |
|---|---|---|---|
ESBL screening test | CTX or CPD or CAZ | 81.3 | 18.7 |
CTX | 81.5 | 18.5 | |
CPD | 80.2 | 19.8 | |
CAZ | 76.5 | 23.5 | |
CFM | 78.9 | 21.1 | |
Double-disk synergy test | CTX or CPD or CAZ | 74.8 | 25.2 |
CTX | 69.9 | 30.1 | |
CAZ | 58.3 | 41.7 | |
CPD | 56.4 | 43.6 | |
CFM | 66.5 | 33.5 | |
Disk replacement test | CTX or CPD or CAZ | 79 | 21 |
CTX | 74.3 | 25.7 | |
CAZ | 65 | 35 | |
CPD | 58.8 | 41.2 | |
CFM | 68.7 | 31.3 | |
Vitek 2 ESBL test | 67.3 | 32.7 |