*2.5. Statistical Analysis*

Chi-squared and Fisher's exact tests were used to find significant differences between categorical variables. The Kolmogorov–Smirnov test was used to test for normal distribution. The 2-sample *t* test (for parametric distributions) or Mann–Whitney U test (for nonparametric distributions) was used to compare continuous variables between groups. The results were given as the mean and standard deviation or as the number and percentage. For statistical analyses, IBM SPSS Statistics software (version 25.0; IBM, Armonk, NY, USA) was used. *p* < 0.05 was considered statistically significant.
