Statistical analysis
All data were analyzed using the Statistical Package for Social Sciences (SPSS) V.22.0. The mean and SD for each quantitative variable were calculated after confirming normal distribution of the data using the Shapiro–Wilk test. The independent t-test was used to compare the differences in the underlying data of the subjects included. Two-way repeated measures analysis of variancewith a post-hoc Bonferroni correction was used, and the level of significance was set at 5% (