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Statistical evaluation of Congo red agar and tube adherence method for detection of biofilm formation
| Methods | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) |
|---|---|---|---|---|---|
| Congo red agar | 78 | 95.2 | 97.5 | 64.5 | 83 |
| Tube adherence method | 82 | 95.2 | 97.6 | 64.5 | 85.9 |
Abbreviations: PPV, positive predictive value; NPV, negative predictive value.
