Diagnostic methods | Positive | Negative | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) |
---|---|---|---|---|---|---|
Thin white homogenous discharge | 81 | 60 | 60.7 | 43.4 | 21.0 | 81.7 |
pH > 4.5 | 114 | 27 | 89.3 | 21.2 | 21.9 | 88.9 |
Positive whiff test | 20 | 121 | 35.7 | 91.2 | 50.0 | 85.1 |
Presence of Clue cell | 13 | 128 | 46.4 | 100 | 100 | 88.3 |