Table 1.

Comparison of clinical characteristics according to Onodera's prognostic nutritional index score at the time of peritoneal dialysis initiation

Data are expressed as numbers (percentages) for categorical variables and median (range) or mean ± standard deviation for continuous variables. Statistical significance was tested using one-way analysis of variance or Kruskal-Wallis test for continuous variables and Pearson's chi-squared test or Fisher's exact test for the categorical variables. Superscripts (^*, ^†, ^‡) indicate significant differences based on post-hoc Tukey comparison or Bonferroni correction. PD, peritoneal dialysis; ESRD, end-stage renal disease; DM, diabetes mellitus; APD, automated peritoneal dialysis; CRP, C-reactive protein; RRF, residual renal function; BMI, body mass index; nPNA, normalized protein equivalent of nitrogen appearance.