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Performance of modified FQRS as a binary classification testa
| FQRS cutoff point | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
|---|---|---|---|---|
| ≥1 | 93 | 33 | 29 | 94 |
| ≥2 | 76 | 68 | 41 | 91 |
| ≥3b | 69 | 84 | 56 | 90 |
FQRS, fluoroquinolone resistance score; PPV, positive predictive value; NPV, negative predictive value.
The use of a cutoff score of ≥3 to indicate a high predicted risk of fluoroquinolone resistance provides the best performance in the statistical model.
