Ultrasonography Precision and Recall
Parameters Sample size (n) Percentage (%)
NCB (n=56) NCB (n=56) NCB (n=56)
NC-USG (True positive) 40 71.428 %
NNC-USG (False negative) 16 28.57 %
NNCB (n=39) NNCB (n=39) NNCB (n=39)
NNC-USG (True negative) 39 100 %
NC-USG (False negative) 0 0 %
Results Results Results
Sensitivity 71.4 % 71.4 %
Specificity 100 % 100 %
Positive predictive value 100 % 100 %
Negative predictive value 7.09 % 7.09 %
False-positive rate 0 % 0 %
False-negative rate 28.6 % 28.6 %