Table 2 Streptococci: 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. | ||
Penicillin | 126 | 19 | 5 | 93.3 | 96.0 | 6 | (4.0) | 0 | 0 |
Erythromycin | 95 | 0 | 55 | 88.6 | 100 | 0 | 0 | 0 | |
Clindamycin | 108 | 2 | 40 | 67.3 | 97.3 | 3 | (2.0) | 1 (0.9) | 0 |
Levofloxacin | 133 | 0 | 17 | 90.7 | 99.3 | 1 | (0.7) | 0 | 0 |
Chloramphenicol | 139 | 0 | 11 | 97.3 | 99.3 | 1 | (0.7) | 0 | 0 |
Cefotaxime | 149 | 0 | 1 | 98.0 | 99.3 | 1 | (0.7) | 0 | 0 |
Cefepime | 145 | 4 | 1 | 100 | 99.3 | 1 | (0.7) | 0 | 0 |
Vancomycin | 150 | 0 | 0 | 100 | 100 | 0 | 0 | 0 | |
Total | 1,045 | 25 | 130 | 91.9 | 98.8 | 13 | (1.1) | 1 (0.1) | 0 |