Table 3.
Essential Agreement (EA) of Microdilution Method Read Manually and Automatically (Manually vs Automatically)
| Difference in MIC (n=165) | Penicillin | Tetracycline | Ciprofloxacin | Spectinomycin | Ceftriaxone | Azithromycin | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | No. | % | No. | % | No. | % | |
| <-2 | 8 | 4.8% | 3 | 1.8% | 1 | 0.6% | 5 | 3.0% | 7 | 4.2% | 5 | 3.0% |
| −2 | 22 | 13.3% | 5 | 3.0% | 1 | 0.6% | 3 | 1.8% | 11 | 6.7% | 8 | 4.8% |
| −1 | 74 | 44.8% | 40 | 24.2% | 31 | 18.8% | 42 | 25.5% | 79 | 47.9% | 52 | 31.5% |
| 0 | 61 | 37.0% | 116 | 70.3% | 115 | 69.7% | 115 | 69.7% | 67 | 40.6% | 99 | 60.0% |
| 1 | 0 | 0.0% | 1 | 0.6% | 7 | 4.2% | 0 | 0.0% | 0 | 0.0% | 1 | 0.6% |
| 2 | 0 | 0.0% | 0 | 0.0% | 4 | 2.4% | 0 | 0.0% | 0 | 0.0% | 0 | 0.0% |
| >2 | 0 | 0.0% | 0 | 0.0% | 6 | 3.6% | 0 | 0.0% | 1 | 0.6% | 0 | 0.0% |
| EA | 135 | 81.8% | 157 | 95.2% | 153 | 92.7% | 157 | 95.2% | 146 | 88.5% | 152 | 92.1% |
Abbreviations: MIC, minimal inhibitory concentration; No., number; EA, essential agreement, deviation of MICs within 1 doubling dilution.