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

Boukje C. Eveleens Maarse, Nicholas C. Chesnaye, the EQUAL Study Investigators, Robbert Schouten, Wieneke M. Michels, Willem Jan W. Bos, MacIej Szymczak, Magdalena Krajewska, Marie Evans, Olof Heimburger, Fergus J. Caskey, Christoph Wanner, Kitty J. Jager, Friedo W. Dekker, Yvette Meuleman*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

7 Citations (Scopus)
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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 - Apr 2022

Bibliographical note

Publisher Copyright:
© 2021 The Author(s).

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