Statistical analysis
For statistics, data normality was evaluated through the
Kolmogorov-Smirnov test. Variables are presented as mean ± standard
deviation or median and interquartile range (IQ), following their
distribution. Categorical variables are shown in absolute and relative
frequencies. Comparisons between groups were performed using the one-way
analysis of variance (ANOVA), followed by the Bonferroni post-hoc test.
Associations were evaluated using the Pearson Chi-square test. All
analyses and data processing were performed using SPSS version 18.0
(SPSS Inc., USA) and the significance level adopted was P ≤0.05.