Figure 6.
Receiver operating characteristic (ROC) curves displaying the ability of various cVEMP statistics to separate Meniere’s from normal ears. Each panel shows the sensitivity of detecting Meniere’s disease (the true-positive rate) versus the false-positive rate (1 - specificity) for 500, 750 and 1000 Hz data at 123 dB peSPL. Top-row ROC statistics are threshold, normalized peak-to-peak amplitude (VEMPn) and VEMP inhibition depth (VEMPid). Bottom-row ROC statistics are 500/1000 Hz threshold ratio, VEMPn 500/1000 Hz ratio and ROCs created by combinations of the top-row metrics. Because the 500 Hz top-row data yielded the largest AUCs, this frequency was used to evaluate combinations of these metrics (bottom right panel). In each panel, the area under the curve (AUC) and 95% confidence interval (CI) of each line are displayed.
