Table 2 MIC concordance of different assays compared to the reference BMD method
Method | BMD | Vitek 2® | UMIC | Colistin E-test MIC strip | |||
|---|---|---|---|---|---|---|---|
Specie | No. Isolates tested | No. Isolates tested | No. of concordant isolates [%]a | No. Isolates tested | No. of concordant isolates [%]a | No. Isolates tested | No. of concordant isolates [%]a |
Acinetobacter spp. | 7 | 4 | 4 [100.0] | 7 | 7 [100.0] | 7 | 6 [85.7] |
C. koseri | 3 | 3 | 3 [100.0] | 3 | 2 [66.7] | 3 | 2 [66.7] |
K. aerogenes | 2 | 2 | 1 [50.0] | 2 | 1 [50.0] | 2 | 2 [100.0] |
E. cloacae | 5 | 5 | 3 [60.0] | 5 | 5 [100.0] | 5 | 3 [60.0] |
E. coli | 24 | 24 | 17 [70.8] | 24 | 19 [79.2] | 24 | 13 [54.2] |
Hafnia spp. | 15 | 15 | 14 [93.3] | 15 | 14 [93.3] | 15 | 13 [86.7] |
K. oxytoca | 3 | 3 | 1 [33.3] | 3 | 3 [100.0] | 3 | 1 [33.3] |
K. pneumoniae | 20 | 19 | 16 [84.2] | 20 | 17 [85.0] | 20 | 13 [65.0] |
P. aeruginosa | 10 | 8 | 7 [87.5] | 10 | 10 [100.0] | 10 | 8 [80.0] |
Total | 97 | 91 | 66 [72.5] | 97 | 78 [80.4] | 97 | 61 [62.9] |