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Associations between depressive symptoms and disease progression in older patients with chronic kidney disease: results of the EQUAL study

  • EQUAL Study Investigators
  • , the EQUAL study investigators
  • Leiden University Medical Center, Department of Medical Statistics, Leiden.
  • Department of Intensive Care, OLVG Hospital, P.O. Box 95500, 1090 HM, Amsterdam, The Netherlands.
  • Wroclaw Medical University
  • Karolinska University Hospital Huddinge
  • Southmead Hospital
  • University and University Hospital Würzburg
  • Leiden University
  • University of Amsterdam
  • locatie West Previously Sint Lucas Andreas Ziekenhuis
  • St. Antonius Ziekenhuis
  • Wrocław Medical University
  • Karolinska University Hospital
  • University of Bristol
  • University of Würzburg

Research output: Contribution to journalArticleAcademicpeer-review

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Abstract

Background: Depressive symptoms are associated with adverse clinical outcomes in patients with end-stage kidney disease; however, few small studies have examined this association in patients with earlier phases of chronic kidney disease (CKD). We studied associations between baseline depressive symptoms and clinical outcomes in older patients with advanced CKD and examined whether these associations differed depending on sex.

Methods: CKD patients (≥65 years; estimated glomerular filtration rate ≤20 mL/min/1.73 m2) were included from a European multicentre prospective cohort between 2012 and 2019. Depressive symptoms were measured by the five-item Mental Health Inventory (cut-off ≤70; 0-100 scale). Cox proportional hazard analysis was used to study associations between depressive symptoms and time to dialysis initiation, all-cause mortality and these outcomes combined. A joint model was used to study the association between depressive symptoms and kidney function over time. Analyses were adjusted for potential baseline confounders.

Results: Overall kidney function decline in 1326 patients was -0.12 mL/min/1.73 m2/month. A total of 515 patients showed depressive symptoms. No significant association was found between depressive symptoms and kidney function over time (P = 0.08). Unlike women, men with depressive symptoms had an increased mortality rate compared with those without symptoms [adjusted hazard ratio 1.41 (95% confidence interval 1.03-1.93)]. Depressive symptoms were not significantly associated with a higher hazard of dialysis initiation, or with the combined outcome (i.e. dialysis initiation and all-cause mortality).

Conclusions: There was no significant association between depressive symptoms at baseline and decline in kidney function over time in older patients with advanced CKD. Depressive symptoms at baseline were associated with a higher mortality rate in men.

Original languageEnglish
Pages (from-to)786-797
Number of pages12
JournalClinical kidney journal
Volume15
Issue number4
DOIs
Publication statusPublished - 1 Apr 2022

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 3 - Good Health and Well-being
    SDG 3 Good Health and Well-being

Keywords

  • chronic kidney disease
  • clinical outcome
  • clinical trial
  • depressive symptoms
  • epidemiology
  • joint model
  • nephrology care
  • prospective cohort study
  • survival analysis

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