Comparison of the estimated GFR-creatinine values in the cases measured during the follow-up.

<p>Values are eGFR-creatinine (mL/min/1.73m<sup>2</sup>) expressed as median (interquartile range (IQR). The overall comparison between groups using the Friedman’s test was significant (p <0.001) and the multiple comparison tests (Wilcoxon’s test with Bonferroni’s correction (p level of significance: <0.020) yielded the following results for the pairwise comparisons: baseline vs. 2 yrs: p<0.001, baseline vs. 5 yrs: p = 0.005, baseline vs. 10 yrs: p<0.001; 2 yrs vs. 5 yrs: p = 0.835, 2 yrs vs. 10 yrs: 0.008; 5 yrs vs. 10 yrs: p<0.001.</p>