Table 3.
AD Compared with rBMD and BMAD for polymyxin B and colistin.
| Species | Tested Agents | rBMD* | BMAD | ||||||
|---|---|---|---|---|---|---|---|---|---|
| % | VME | ME | CA | EA | VME | ME | CA | EA | |
| E. coli | PMB | 2.5 | 0 | 97.5 | 80 | 0 | 0 | 100 | 87.5 |
| K. pneumoniae | 10.5 | 0 | 89.5 | 94.7 | 5.3 | 0 | 94.7 | 89.5 | |
| E. cloacae | 10.8 | 0 | 89.2 | 86.5 | 0 | 0 | 100 | 62.2 | |
| K. aerogenes | 3.3 | 0 | 96.7 | 90 | 0 | 0 | 100 | 73.3 | |
| A. baumannii | 15.8 | 0 | 84.2 | 76.3 | 2.6 | 0 | 97.4 | 86.8 | |
| P. aeruginosa | 29.7 | 2.7 | 67.6 | 81.1 | 0 | 2.7 | 97.3 | 73 | |
| Total (%) | 12.2 | 0.4 | 87.3 | 85 | 1.4 | 0.4 | 98.2 | 79.1 | |
| E. coli | CST | 2.5 | 0 | 97.5 | 67.5 | 0 | 0 | 100 | 92.5 |
| K. pneumoniae | 7.9 | 0 | 92.1 | 68.4 | 2.6 | 0 | 97.4 | 86.8 | |
| E. cloacae | 0 | 0 | 100 | 78.4 | 2.7 | 0 | 97.3 | 89.2 | |
| K. aerogenes | 0 | 0 | 100 | 73.3 | 6.7 | 0 | 93.3 | 90 | |
| A. baumannii | 7.9 | 0 | 92.1 | 71.1 | 0 | 0 | 100 | 100 | |
| P. aeruginosa | 35.1 | 0 | 64.9 | 94.6 | 10.8 | 0 | 89.2 | 89.2 | |
| Total (%) | 9.1 | 0 | 90.9 | 75.1 | 3.6 | 0 | 96.4 | 91.8 | |
VME: very major errors; ME: major errors; CA: categorical agreement; EA: essential agreement; PMB: polymyxin B; CST: colistin; BMAD: broth macrodilution; AD: agar dilution; rBMD: reference broth microdilution. *: using tissue-culture-treated microtiter plates.