Cited by 112Dementia and Cognitive Impairment ResearchAging, Health, and DisabilityAging and Gerontology Research

Trajectories of depressive symptoms and subsequent cognitive decline in older adults: a pooled analysis of two longitudinal cohorts

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Zhu, Yidan, Li, Chenglong, Xie, Wuxiang, Zhong, Baoliang, Wu, Yangfeng, Blumenthal, James A·2022·Age and Ageing

Abstract

Background: the course of depression is variable, but it is unknown how this variability over time affects long-term cognitive decline. Objective: to examine the relationship of different trajectories of depressive symptoms on rates of subsequent cognitive decline in older adults. Design: population-based cohort study. Setting: communities in the USA and England. Subjects: 17,556 older adults from the Health and Retirement Study and the English Longitudinal Study of Ageing. Methods: depressive symptoms were assessed using the Center for Epidemiologic Studies Depression Scale, and trajectories were calculated using group-based trajectory modelling. Global cognitive function and three cognitive domains of memory, executive function and temporal orientation were assessed for up to 18 years. Results: five trajectories of depressive symptoms were identified. Compared with the ‘non-depressed’ trajectory, the ‘worsening depressive symptoms’ trajectory (pooled β = −0.016 standard deviation (SD)/year, 95% confidence interval (CI): −0.021 to −0.010), ‘persistent depressive symptoms’ trajectory (pooled β = −0.016 SD/year, 95% CI: −0.024 to −0.008), and ‘mild depressive symptoms’ trajectory (pooled β = −0.008 SD/year, 95% CI: −0.014 to −0.003) were associated with faster rates of cognitive decline, while no such association was found for the ‘improving depressive symptoms’ trajectory (pooled β = 0.001 SD/year, 95% CI: −0.010 to 0.012). Conclusions: subthreshold depressive symptoms are associated with an increased rate of cognitive decline, while individuals who show improving depressive symptoms do not exhibit accelerated cognitive decline. These findings raise the possibility that maintaining depressive symptoms as low as possible and ignoring the clinical threshold, might mitigate cognitive decline in older adults.

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  1. Radloff LS. The CES-D scale: a self-report depression scale for research in the general population. Appl Psychol Meas 1977; 1: 385-401.

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Authors
Zhu, Y., Li, C., Xie, W., Zhong, B., Wu, Y., & Blumenthal, J. A.
Affiliations
  • Peking University (CN)
  • Affiliated Wuhan Mental Health Center, Tongji Medical College of Huazhong University of Science & Technology, Wuhan, China
  • Duke Medical Center (US)
Corresponding author
Xie, Wuxiang
Venue
Age and Ageing
Published
2021-10-16
Volume
51
Issue
1
ISSN
  • 0002-0729 (ISSN-L)
  • 1468-2834
OpenAlex
W3206498095
Cited by
112
References
37
Citations by year
2026: 24 · 2025: 28 · 2024: 31 · 2023: 23 · 2022: 6
FWCI
10.76
Type
journal article
Language
en
Open access
Locations
  • Age and Ageing (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Health Research and Educational Trust
  • Academy of Medical Sciences (NIF001-1005-P56804)
  • National Natural Science Foundation of China (81974489, 81974490)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Health Sciences › Medicine › Public Health, Environmental and Occupational Health › Aging, Health, and Disability
  • Social Sciences › Psychology › Neuropsychology and Physiological Psychology › Aging and Gerontology Research
Keywords
depressive symptoms, cognitive decline, older adults, subthreshold depression, mild depressive symptoms, persistent depressive symptoms, memory, executive function, time orientation, global cognitive function
MeSH terms
Aged, Cognition, Depression, Humans, Longitudinal Studies, Cohort Studies, Cognitive Dysfunction

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