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Hearing Impairment and Incident Dementia: Findings from the English Longitudinal Study of Ageing

Davies, Hilary R., Cadar, Dorina, Herbert, Annie, Orrell, Martin and Steptoe, Andrew (2017) Hearing Impairment and Incident Dementia: Findings from the English Longitudinal Study of Ageing Journal of the American Geriatrics Society, 65 (9). pp. 2074-2081.

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Abstract

Objectives

To determine whether hearing loss is associated with incident physician‐diagnosed dementia in a representative sample.

Design

Retrospective cohort study.

Setting

English Longitudinal Study of Ageing.

Participants

Adults aged 50 and older.

Measurements

Cross‐sectional associations between self‐reported (n = 7,865) and objective hearing measures (n = 6,902) and dementia were examined using multinomial‐logistic regression. The longitudinal association between self‐reported hearing at Wave 2 (2004/05) and cumulative physician‐diagnosed dementia up to Wave 7 (2014/15) was modelled using Cox proportional hazards regression.

Results

After adjustment for potential confounders, in cross‐sectional analysis, participants who had self‐reported or objective moderate and poor hearing were more likely to have a dementia diagnosis than those with normal hearing (self‐reported: odds ratio OR = 1.6, 95% CI = 1.1–2.4 moderate hearing; OR = 2.6, 95% CI = 1.7–3.9 poor hearing, objective: OR = 1.6, 95% CI = 1.0–2.8 moderate hearing; OR = 4.4, 95% CI = 1.9–9.9 poor hearing). Longitudinally, the hazard of developing dementia was 1.4 (95% CI = 1.0–1.9) times as high in individuals who reported moderate hearing and 1.6 (95% CI = 1.1–2.0) times as high in those who reported poor hearing.

Conclusion

Older adults with hearing loss are at greater risk of dementia than those with normal hearing. These findings are consistent with the rationale that correction of hearing loss could help delay the onset of dementia, or that hearing loss itself could serve as a risk indicator for cognitive decline.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Health Sciences
Authors :
NameEmailORCID
Davies, Hilary R.hilary.davies@surrey.ac.uk
Cadar, Dorina
Herbert, Annie
Orrell, Martin
Steptoe, Andrew
Date : 22 July 2017
Funders : Economic and Social Research Council (ESRC)
DOI : 10.1111/jgs.14986
Copyright Disclaimer : © 2017, The Authors. The Journal of the American Geriatrics Society published by Wiley Periodicals, Inc. on behalf of The American Geriatrics Society. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Uncontrolled Keywords : Hearing loss; Dementia; Aging; Epidemiology
Depositing User : Clive Harris
Date Deposited : 31 Aug 2018 12:21
Last Modified : 11 Dec 2018 11:24
URI: http://epubs.surrey.ac.uk/id/eprint/849169

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