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Published on 9 de enero de 2026 | http://doi.org/10.5867/medwave.2026.01.3049
Identification and susceptibility profile of microorganisms isolated directly from urine in a cross-sectional study using matrix-assisted laser desorption/ionization time-of-flight and Phoenix M50
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Diagnostic Performance Indicators of the evaluated method.
| Global | 316 | 11 | 22 | 31 | 93.40% | 73.80% | 96.60% | 58.50% | 0.913 | 0.781 | 0.604 |
| Gram-negative | 297 | 6 | 16 | 8 | 94.90% | 57.10% | 98.00% | 33.30% | 0.933 | 0.89 | 0.389 |
| Gram-positive | 19 | 5 | 6 | 23 | 76.00% | 82.10% | 79.20% | 79.30% | 0.792 | 0.503 | 0.583 |
FN, false negative. FP, false positive. NPV, negative predictive value. PPV, positive predictive value. Pe, Expected agreement by chance. Po, Observed agreement. TN, true negative. TP, true positive.
Source: Prepared by the authors of this study.