Table 3.

The Diagnostic Accuracy of US-FNAc

	Malignant number	Benign number	Total
Malignant number	12	45	57
Benign number	3	146	149
Total	15	191
Sensitivity = 80%; Specificity = 75%; Accuracy = 78.9%; PPV = 92.3%; NPV = 50.0%

PPV, Positive predictive value; NPV, Negative predictive value