Statistical analyses
Data were analyzed using IBM SPSS Statistics software version 26.0
(Armonk, New York, USA). Categorical variables (response rates) were
compared by Fisher’s exact test; Pearson’s correlation analysis was
performed to analyze the correlation of VEMP parameters between the IEM
and control groups. Continuous variables (VEMP parameters) were
evaluated by Student’s T-test. A significance level of 0.05 was applied
to all analyses.