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Table 6 Sensitivity and specificity for FNAB

From: The diagnostic value of ultrasonography in detection of different types of thyroid nodules

Bethesda Histopathology Sensitivity Specificity PPV NPV Accuracy
Benign (n = 34) Malignant (n = 16)
No. % No. %
Benign (I:IV) 34 100 10 62.5 37.50 100.0 100.0 77.27 80.0
Malignant (V + VI) 0 0.0 6 37.5
χ2(FEp) 14.489a (0.001a)
  1. c2 chi-square test, FE Fisher’s exact test, p p value for comparing between the studied groups, NPV negative predictive value, PPV positive predictive value
  2. aStatistically significant at p ≤ 0.05