Cited by 245Dementia and Cognitive Impairment ResearchHealth disparities and outcomesCognitive Abilities and Testing

Individual and Area-Based Socioeconomic Factors Associated With Dementia Incidence in England: Evidence From a 12-Year Follow-up in the English Longitudinal Study of Ageing

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Cadar, Dorina, Lassale, Camille, Davies, Hilary, Llewellyn, David J., Batty, G. David, Steptoe, Andrew·2018·JAMA Psychiatry

Abstract

Importance: Lower educational attainment is associated with a higher risk of dementia. However, less clear is the extent to which other socioeconomic markers contribute to dementia risk. Objective: To examine the relationship of education, wealth, and area-based deprivation with the incidence of dementia over the last decade in England and investigate differences between people born in different periods. Design, Setting, and Participants: Data from the English Longitudinal Study of Ageing, a prospective cohort study that is representative of the English population, were used to investigate the associations between markers of socioeconomic status (wealth quintiles and the index of multiple deprivation) and dementia incidence. To investigate outcomes associated with age cohorts, 2 independent groups were derived using a median split (born between 1902-1925 and 1926-1943). Main Outcomes and Measures: Dementia as determined by physician diagnosis and the Informant Questionnaire on Cognitive Decline in the Elderly. Results: A total of 6220 individuals aged 65 years and older enrolled in the study (median [interquartile range] age at baseline, 73.2 [68.1-78.3] years; 3410 [54.8%] female). Of these, 463 individuals (7.4%) had new cases of dementia ascertained in the 12 years between 2002-2003 and 2014-2015. In the cohort born between 1926 and 1943, the hazard of developing dementia was 1.68 times higher (hazard ratio [HR] = 1.68 [95% CI, 1.05-2.86]) for those in the lowest wealth quintile compared with those in the highest quintile, independent of education, index of multiple deprivation, and health indicators. Higher hazards were also observed for those in the second-highest quintile of index of multiple deprivation (HR = 1.62 [95% CI, 1.06-2.46]) compared with those in the lowest (least deprived) quintile. Conclusions and Relevance: In an English nationally representative sample, the incidence of dementia appeared to be socioeconomically patterned primarily by the level of wealth. This association was somewhat stronger for participants born in later years.

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  1. [10]Banks J, Karlsen S, Oldfield Z. Socio-economic position. In: Marmot M, Banks J, Blundell C, Lessof C, Nazroo J, eds. Health, Wealth and Lifestyle of the Older Population in England. London, United Kingdom: Institute for Fiscal Studies; 2003: 71- 125.

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Authors
Cadar, D., Lassale, C., Davies, H., Llewellyn, D. J., Batty, G. D., & Steptoe, A.
Affiliations
  • University College London (GB)
  • School of Health Sciences, University of Surrey, Guildford, United Kingdom
  • University of Exeter (GB)
Corresponding author
Cadar, Dorina
Venue
JAMA Psychiatry
Published
2018-07-01
Volume
75
Issue
7
Pages
723
ISSN
2168-622X (ISSN-L)
OpenAlex
W2803752526
Cited by
245
References
44
Citations by year
2026: 29 · 2025: 28 · 2024: 51 · 2023: 39 · 2022: 28 · 2021: 23 · 2020: 26 · 2019: 16 · 2018: 5
FWCI
13.77
Type
journal article
Language
en
Open access
Licence
cc-by
Locations
  • JAMA Psychiatry (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Surrey Research Insight Open Access (The University of Surrey) (submittedVersion)
  • UCL Discovery (University College London) (submittedVersion)
  • Figshare (submittedVersion)
  • Open Research Exeter (University of Exeter) (submittedVersion, cc-by)
Funders
National Institute on Aging (R01AG017644)
Topics
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Social Sciences › Health › Health disparities and outcomes
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Abilities and Testing
Keywords
dementia incidence, socioeconomic status, educational attainment, wealth, area deprivation, Index of Multiple Deprivation, birth cohort differences, older adults, cognitive decline
MeSH terms
Economic Status, Aged, Aged, 80 and over, Dementia, Educational Status, England, Female, Follow-Up Studies, Humans, Longitudinal Studies, Male, Socioeconomic Factors, Cohort Studies, Incidence, Proportional Hazards Models

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