The data were tabulated in a Microsoft© Excel 2007 spreadsheet and analyzed using the Statistical Package for the Social Sciences, version 20 (SPSS, Chicago, IL). The mean, standard deviation, median IOP measurements, blood pressure, and weight were obtained. Data normality was assessed by the Kolmogorov-Smirnov test. The significance of differences between measurements obtained before and after hemodialysis was assessed by the Wilcoxon test. The relationship between IOP and weight was assessed by Pearson's or Spearman's correlation. P-values <0.05 were considered significant.