Table 3 Enterococci: overall agreement of AST results between the Phoenix system and the Etest method.
Antibiotic | Susceptibility (No.) | Essential agreement | Categorical agreement | Minor errors | Major errors | Very major errors | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|
S | I | R | % | % | No. (%) | No. (%) | No. (%) | ||||
Ampicillin | 62 | 0 | 38 | 100 | 100 | 0 | 0 | 0 | |||
Vancomycin | 59 | 10 | 31 | 97.0 | 96.0 | 4 | (4.0) | 0 | 0 | ||
Teicoplanin | 73 | 3 | 24 | 87.0 | 94.0 | 3 | (3.0) | 2 | (2.7) | 1 | (4.2) |
HL streptomycin | 47 | 0 | 53 | 99.0 | 99.0 | 0 | 0 | 1 | (1.9) | ||
HL gentamicin | 53 | 0 | 47 | 99.0 | 99.0 | 0 | 0 | 1 | (2.1) | ||
Chloramphenicol | 81 | 3 | 16 | 95.0 | 94.0 | 2 | (2.0) | 4 | (4.9) | 0 | |
Linezolid | 100 | 0 | 0 | 97.0 | 89.0 | 10 | (10.0) | 1 | (1.0) | 0 | |
Quinupristin-dalfopristin | 36 | 9 | 55 | 100 | 94.0 | 6 | (6.0) | 0 | 0 | ||
Tetracycline | 50 | 1 | 49 | 99.0 | 99.0 | 0 | 1 | (2.0) | 0 | ||
Total | 561 | 26 | 313 | 97.0 | 96.0 | 25 | (2.8) | 8 | (1.4) | 3 | (0.9) |