Table III.

Intraoperative loss of signal and its predictive value – intraoperative RLN loss of signal with IONM (n = 190)

True positive (TP) N = 5	False positive (FP) N = 3	True negative (TN) N = 180	False negative (FN) N = 2
Sensitivity TP/(TP + FN) 71%	Specificity TN/(FP + TN) 98%	Positive predictive value TP/(TP + FP) 62.5%	Negative predictive value TN/(FN + TN) 98.9%	Accuracy (TP + TN)/n 97%