Figure 2. Prognostic effect of neuromagnetic index.
(A) ROC curves showed the best prediction effect of I/C for the hearing improvement. Left, between subgroups of complete and partial recovery, the optimal cut-off value was an initial I/Cls on affected-ear stimulation at 1.34 (area under curve 1, sensitivity 100%, specificity 100%, red circle). Right, between subgroups of partial and no recovery, the optimal cut-off value was an initial I/Cls on healthy-ear stimulation at 0.76 (area under curve 0.87, sensitivity 80%, specificity 100%, red circle). (B) Relationship between ipsilateral/contralateral ratio and hearing levels. When ipsilateral/contralateral ratio were correlated to hearing levels, no significant correlation was revealed except for that between the initial I/Ca on affected-ear stimulation and the fixed hearing level (r = 0.58, p = 0.006). r, correlation coefficient; *, p<0.05.