*Statistical Analysis*

Statistical analysis was performed using the Dell Statistica 13.0 PL software. The results were expressed as the mean values and standard deviation for normally distributed variables and as the median and range for non-normally distributed variables. The normality of distributions was evaluated using the Lilliefors and Shapiro-Wilk tests. The significance of differences between the mean values was evaluated using the ANOVA for normally distributed variables and the Kruskal-Wallis test for non-normally distributed variables. The significance of differences between groups was determined using the Student *t*-test (for normally distributed variables) and the Mann-Whitney test (for non-normally distributed variables). To evaluate differences between baseline and follow-up values, the Student *t-* test and the Wilcoxon test were used (for normally and non-normally distributed variables, respectively). *p* < 0.05 was considered statistically significant. The Kaplan-Meier and Cox regression analyses were performed to calculate renal survival.
