TABLE 3.
Analysis of differences between methods for MIC determination for 138 positive blood cultures containing yeasts
| Antifungal agent and test methods compared | n | Mean difference between methods (log2 dilutions) | Pa | Limit of 95% CI (log2 dilution)
|
No. (%) of indicated type of error
|
||
|---|---|---|---|---|---|---|---|
| Lower | Upper | Minor | Major | ||||
| Amphotericin B | |||||||
| DET-24/MD | 132 | −0.753 | 0.016 | −0.978 | −0.528 | NAb | NA |
| DET-48/MD | 138 | −0.138 | 0.000 | −0.352 | 0.076 | NA | NA |
| ET/MD | 138 | −0.297 | 0.000 | −0.514 | −0.080 | NA | NA |
| Flucytosine | |||||||
| DET-24/MD | 132 | −0.258 | 0.003 | −0.791 | 0.275 | 3 (2.3) | 0 (0) |
| DET-48/MD | 138 | −0.065 | 0.001 | −0.604 | 0.474 | 2 (1.4) | 0 (0) |
| ET/MD | 138 | −0.181 | 0.001 | −0.719 | 0.357 | 3 (2.2) | 0 (0) |
| Fluconazole | |||||||
| DET-24/MD | 132 | −0.356 | 0.018 | −0.957 | 0.245 | 4 (3.0) | 0 (0) |
| DET-48/MD | 138 | 0.174 | 0.003 | −0.419 | 0.767 | 5 (3.6) | 0 (0) |
| ET/MD | 138 | −0.167 | 0.004 | −0.772 | 0.439 | ||
| Itraconazole | |||||||
| DET-24/MD | 132 | 0.662 | 0.130 | 0.074 | 1.249 | 24 (18.2) | 4 (3.0) |
| DET-48/MD | 138 | 0.957 | 0.442 | 0.373 | 1.540 | 23 (16.7) | 5 (3.6) |
| ET/MD | 138 | 0.703 | 0.150 | 0.141 | 1.265 | 22 (15.9) | 6 (4.3) |
| Ketoconazole | |||||||
| DET-24/MD | 132 | −0.042 | 0.001 | −0.591 | 0.506 | NA | NA |
| DET-48/MD | 138 | 0.529 | 0.053 | −0.043 | 1.101 | NA | NA |
| ET/MD | 138 | 0.065 | 0.001 | −0.502 | 0.632 | NA | NA |
A P value of <0.05 indicates that the difference was small.
NA, not applicable.