The Egyptian Journal of Otolaryngology

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)	14.489^a (0.001^a)

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
^aStatistically significant at p ≤ 0.05

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