Statistical analyses.
Statistical analysis of data was performed through Microsoft EXCEL and
IBM SPSS statistics 25 software package Armonk, NY IBM corp. Comparisons
between groups were performed using the χ2 test, ANOVA test (Bonferroni)
and Kruskal-Wallis test for independent samples. An uninominal logistic
regression analyses was performed to analyze if prognostic factor
hearing loss at the end of treatment was a significant prognostic factor
for late ototoxicity outcomes. The results were considered significant
with a p-value < 0.05.