2.4|Statistical Analysis
The statistical analyses were performed using SPSS for Windows, version
22 (SPSS Inc, Chicago, IL, USA). The selection of subjects for non-LVAS
group was performed by PSM method by matching the gender, age and
hearing threshold at the ratio of 1:1. Continuous variables were
expressed as the mean ± SD or median (IQR) and categorical values were
shown in the form of n (%). For continuous variables, one-sample
T-test, single-sample T-test, and ANOVA were used for normally
distributed data and Mann–Whitney U test for non-normally distributed
data. For categorical variables, chi square test and Fisher’s exact test
were used. Multivariate linear regression was performed to assess the
relative contributions of corresponding variables to Gesell
developments. p <.05 was considered statistically
significant.