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Table 3 Comparison of various diagnostic methods of Amsel’s criteria with Nugent’s score as a gold standard for the diagnosis of BV

From: Comparative study of Amsel’s criteria and Nugent scoring for diagnosis of bacterial vaginosis in a tertiary care hospital, Nepal

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