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Results of boronic acid disk tests using ceftazoidime (CAZ) as substrate with either 300 or 600 μg of APB in the phenotypic detection of Amp C
| For screening | Test performance | |||||||
|---|---|---|---|---|---|---|---|---|
| FOX resistant (n = 31) | FOX sensitive (n = 6) | Sensitivity | Specificity | PPV | NPV | |||
| +ve by boronic acid | -ve by boronic acid | +ve by boronic acid | -ve by boronic acid | |||||
| CAZ 300 | 29 | 10 | 0 | 6 | 74.36 % | 100 % | 100 % | 37.5 % |
| CAZ 600 | 33 | 6 | 0 | 9 | 84.67 % | 100 % | 100 % | 50 % |
