Table 3 Summary of the results on CRE obtained with automated methods compared to the results with reference method
Antibiotics | System (concns in mg/l) | % agreement in clinical categories | % essential agreement | No. of errors of different types (%) | ||
|---|---|---|---|---|---|---|
Very major | Major | Minor | ||||
CIP | WalkAway (0.12, 1, 2) | 76.0 | 81.3 | 2 (0.2) | 4 (0.4) | 4 (0.4) |
BD Phoenix (0.12, 0.25,0.5, 1,2) | 80.0 | 88.0 | 2 (0.2) | 1 (0.1) | 4 (0.4) | |
Vitek-2 (0.25, 0.5,1, 2, 4) | 85.4 | 84.0 | 3 (0.3) | 2 (0.2) | 7 (0.8) | |
LEV | Walkaway (4, 8) | 78.7 | 86.7 | 2 (0.2) | 2 (0.2) | 3 (0.3) |
BD Phoenix (2, 4, 8) | 77.3 | 84.0 | 1 (0.1) | 2 (0.2) | 4 (0.4) | |
Vitek-2 (1, 2,4, 8, 16) | 81.3 | 81.3 | 3 (0.3) | 3 (0.3) | 7 (0.8) | |
GEN | Walkaway (4, 8) | 86.7 | 89.3 | 5 (0.6) | 1 (0.1) | 2 (0.2) |
BD Phoenix (2, 4, 8) | 90.7 | 90.7 | 3 (0.3) | 2 (0.2) | 3 (0.3) | |
Vitek-2 (1, 2,4, 8, 16) | 89.3 | 90.7 | 3 (0.3) | 2 (0.2) | 3 (0.3) | |
AMK | Walkaway (8, 16, 32) | 92.0 | 94.7 | 1 (0.1) | 1 (0.1) | 0 |
BD Phoenix (8, 16, 32) | 90.7 | 89.3 | 1 (0.1) | 1 (0.1) | 1 (0.1) | |
Vitek-2 (8, 16, 32) | 88.0 | 84.0 | 2 (0.2) | 1 (0.1) | 1 (0.1) | |