The impact of body mass index on mortality according to age in hemodialysis patients: an analysis of the Korean Renal Data System.

ABSTRACT: The impact of age on the relationship between body mass index (BMI) and all-cause mortality in hemodialysis (HD) patients is not clearly understood. Using data from the Korean Renal Data System (2001-2022), we analyzed 66,129 HD patients, stratified into young (<65 years, n = 24,589), younger-old (65-74 years, n = 17,732), and older-old (≥75 years, n = 23,808) groups. Patients were categorized into BMI quartiles, and survival outcomes were evaluated using Kaplan-Meier curves and event time ratios for the relative change in the survival time. During the follow-up period, 14,360 of the patients (21.7%) died, with a median follow-up of 3.4 years. Kaplan-Meier curves revealed poorer outcomes in lower BMI quartiles across all age groups. The lowest BMI quartile was significantly associated with

SUBMITTER: Kim H 

PROVIDER: S-EPMC11985308 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature