Table 3.
Results of different screening tests for group 1 microorganisms
| NVMM guideline | No. of isolates with indicated ESBL test result |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| EbSA |
ChromID |
MIC strip |
Vitek2 test panel |
|||||||
| Positive | Negative | Positive | Negative | Positive | Negative | Inconclusivea | Positive | Negative | Inconclusivea | |
| ESBL positive | 281 | 10 | 283 | 8 | 275 | 1 | 15 | 271 | 14 | 6 |
| ESBL negative | 13 | 201 | 13 | 201 | 10 | 102 | 102 | 20 | 148 | 46 |
| Sensitivity (%) | 96.6 | 97.3 | 99.6 | 95.1 | ||||||
| Specificity (%) | 93.9 | 93.9 | 91.1 | 88.1 | ||||||
a
Inconclusive test results were excluded from sensitivity and specificity calculations.