Method | BMD | Vitek 2®a | Rapid PolymyxinTM NPb | UMIC | Colistin E-test MIC strip | ||||
---|---|---|---|---|---|---|---|---|---|
Species | S/R | S/R | % concordance | S/R | % concordance | S/R | % concordance | S/R | % concordance |
Acinetobacter spp. | 6/1 | 4/0 | 100 | 1/1 | 50 | 6/1 | 100 | 6/1 | 100 |
C. koseri | 3/0 | 3/0 | 100 | 3/0 | 100 | 3/0 | 100 | 3/0 | 100 |
K. aerogenes | 1/1 | 1/1 | 100 | 1/1 | 100 | 1/1 | 100 | 1/1 | 100 |
E. cloacae | 2/3 | 3/2 | 80 | 2/3 | 100 | 2/3 | 100 | 3/2 | 80 |
E. coli | 13/11 | 13/11 | 100 | 13/11 | 100 | 13/11 | 100 | 13/11 | 100 |
Hafnia spp. | 0/15 | 1/14 | 93.3 | 0/15 | 100 | 0/15 | 100 | 0/15 | 100 |
K. oxytoca | 1/2 | 1/2 | 100 | 1/2 | 100 | 1/2 | 100 | 1/2 | 100 |
K. pneumoniae | 8/12 | 9/10 | 94.7 | 9/11 | 95 | 9/11 | 95 | 9/11 | 95 |
M. morganii | 0/3 | 0/3 | 100 | 0/3 | 100 | 0/3 | 100 | 0/3 | 100 |
P. mirabilis | 0/2 | 0/2 | 100 | 0/2 | 100 | 0/2 | 100 | 0/2 | 100 |
P. vulgaris | 0/1 | 0/1 | 100 | 0/1 | 100 | 0/1 | 100 | 0/1 | 100 |
P. aeruginosa | 9/1 | 8/0 | 87.5 | NA | NA | 10/0 | 90 | 10/0 | 90 |
S. marcescens | 0/2 | 0/2 | 100 | 0/2 | 100 | 0/2 | 100 | 0/2 | 100 |
Total | 43/54 | 43/48 | 95.6 | 30/52 | 98.8 | 45/52 | 97.9 | 46/51 | 96.9 |