Table 3.
Performance of DAST compared with reference AST method for non-fermenters by VITEK-2 system
| Non-fermenters (75) | Categorical agreement, n (%) | Categorical disagreement (%) | Essential agreement | ||||
|---|---|---|---|---|---|---|---|
| Minor error | Major error | Very major error | Total | Agreed | Disagreed | ||
| Aztreonam | 75 (100.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 75 (100.0%) | 0 (0.0%) |
| Piperacillin/tazobactam | 70 (93.3%) | 2 (2.6%) | 3 (4.1%) | 0 (0.0%) | 5 (6.7%) | 74 (98.7%) | 1 (1.3%) |
| Ceftazidime | 74 (98.7%) | 1 (1.3%) | 0 (0.0%) | 0 (0.0%) | 1 (1.3%) | 75 (100.0%) | 0 (0.0%) |
| Cefepime | 74 (98.7%) | 1 (1.3%) | 0 (0.0%) | 0 (0.0%) | 1 (1.3%) | 75 (100.0%) | 0 (0.0%) |
| Cotrimoxazole | 75 (100.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 75 (100.0%) | 0 (0.0%) |
| Imipenem | 74 (98.7%) | 1 (1.3%) | 0 (0.0%) | 0 (0.0%) | 1 (1.3%) | 75 (100.0%) | 0 (0.0%) |
| Meropenem | 74 (98.7%) | 1 (1.3%) | 0 (0.0%) | 0 (0.0%) | 1 (1.3%) | 75 (100.0%) | 0 (0.0%) |
| Amikacin | 73 (97.4%) | 1 (1.3%) | 0 (0.0%) | 1 (1.3%) | 2 (2.6%) | 74 (98.7%) | 1 (1.3%) |
| Gentamicin | 74 (98.7%) | 0 (0.0%) | 0 (0.0%) | 1 (1.3%) | 1 (1.3%) | 75 (100.0%) | 0 (0.0%) |
| Ciprofloxacin | 72 (96.1%) | 1 (1.3%) | 2 (2.6%) | 0 (0.0%) | 3 (3.9%) | 74 (98.7%) | 1 (1.3%) |
| Levofloxacin | 72 (96.1%) | 1 (1.3%) | 1 (1.3%) | 1 (1.3%) | 3 (3.9%) | 74 (98.7%) | 1 (1.3%) |
| Minocycline | 75 (100.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 75 (100.0%) | 0 (0.0%) |
| Tigecycline | 75 (100.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 75 (100.0%) | 0 (0.0%) |
| Colistin | 75 (100.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 0 (0.0%) | 75 (100.0%) | 0 (0.0%) |