Table 4. Percent essential agreement (EA) between comparator methods for colistin MIC determination and the reference broth microdilution method.
| n | AD | Etest / MHE | Etest / Oxoid | Etest / BD | MTS / MHE | MTS / Oxoid | MTS / BD | Vitek 2 | ST | |
|---|---|---|---|---|---|---|---|---|---|---|
| Enterobactericeae1 | 24 | 87.5% | 87.5% | 87.5% | 87.5% | 83.3% | 79.2% | 79.2% | 87.5% | 87.5% |
| Enterobactericeae2 | 97 | 93.8% | 88.7% | 87.6% | 85.6% | 64.9% | 62.9% | 60.8% | 93.8% | 94.8% |
| P. aeruginosa1 | 44 | 52.3% | 72.7% | 54.5% | 61.4% | 88.6% | 72.7% | 84.1% | 84.1% | 84.1% |
| P. aeruginosa2 | 81 | 40.7% | 74.1% | 49.4% | 61.7% | 85.2% | 72.8% | 80.2% | 85.2% | 86.4% |
| Total1 | 68 | 64.7% | 77.9% | 66.2% | 70.6% | 86.8% | 75.0% | 82.4% | 85.3% | 85.3% |
| Total2 | 178 | 69.7% | 82.0% | 70.2% | 74.7% | 74.2% | 67.4% | 69.7% | 89.9% | 91.0% |
1 unique isolate subset
2 full one-year sample