Baseline and demographic characteristics in validation dataset.

The numbers of deaths, frequency of hospitalization and PEW were higher in Group 1 than in the other groups. Values are expressed as mean ± standard deviation. Serum intact PTH level and vintage are presented as median and interquartile range. The values were compared between the datasets by the chi-square test, one-way analysis of variance, or Kruskal-Wallis test as appropriate. Patients were categorized into four groups on the basis of quartiles of SI.
Abbreviations: Group 1, SI<12.7; Group 2, 12.7≤SI<19.0; Group 3, 19.0≤SI<26.1; Group 4, 26.1≤SI; SI, Survival index; BMI, body mass index; CVDs, cardiovascular diseases as comorbid conditions; DM, diabetes mellitus as a cause of end-stage renal disease; PTH, intact parathyroid hormone; nPCR, normalized protein catabolic rate; GNRI, geriatric nutritional risk index; CS, combined score; AVF, arteriovenous fistula use; PEW, protein energy wasting.
Baseline and demographic characteristics in validation dataset.