ArticleKidney international reports2025
Impact of Different CKD Definitions on Long-Term Renal Function and Mortality in a Population-Based Cohort Study.
Article in Kidney international reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: The adoption of age or individualized body surface area (i-BSA) estimated glomerular filtration rate (eGFR) thresholds could influence the prevalence and prognosis of chronic kidney disease (CKD). This longitudinal study with up to 15 years of follow-up in the general population, compares different eGFR thresholds for CKD definition: standard, corrected to i-BSA, and age-stratified. For each, we assessed the prevalence of CKD and the combined impact on rapid renal function decline (RRFD) and mortality. Methods: Patients were classified as CKD according to the presence of significant albuminuria and/or different eGFR thresholds as follows: (i) < 60ml/min per 1.73 m Results: We analyzed 4952 participants (54% women; mean age: 52 years). Age-stratified definition resulted in 24 of 677 participants aged < 40 years reclassified as CKD, with no adverse outcomes; whereas 55 of 713 participants aged > 65 years were reclassified as non-CKD, with 12 deaths and 1 RRFD. After multivariate adjustment, the CKD group had a poorer prognosis compared with the non-CKD group independently of the definition used; hazard ratio (HR) and 95% confidence interval (CI) were 2.23 (1.59-3.12), 2.06 (1.46-2.90), and 1.64 (1.13-2.38) for the standard, corrected to i-BSA, and age-stratified definitions, respectively. Conclusion: In our study, classification of CKD by age or i-BSA does not appear to improve prediction of RRFD and mortality.
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