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Table 1 Diagnostic performance of umami taste sensitivity test for assessment of umami taste disorder

From: The important role of umami taste in oral and overall health

  AT PT SP
AUC 0.95 0.97 0.97
Cut-off value 200 mM MSG 50 mM MSG 50 mM MSG
Sensitivity 0.86 1.00 1.00
Specificity 0.94 0.83 0.82
PPV 0.83 0.67 0.65
NPV 0.95 1.00 1.00
Diagnostic accuracy (TP + TN) 0.92 0.87 0.86
  1. AT anterior tongue, PT posterior tongue, SP soft palate, AUC area under the receiver operating characteristics curve, PPV positive predictive value, NPV negative predictive value; Diagnostic accuracy = true positives (TP) + true negatives (TN).