Author:
Lau K,Dimitriadis P A,Mitchell C,Martyn-St-James M,Hind D,Ray J
Abstract
Abstract
Background
The aim of this study was to identify any relationship between hearing loss and mild cognitive impairment.
Method
This was a systematic review and meta-analysis of randomised controlled trials conducted using Medline and the Cochrane Library up to 24 June 2020. Prospective, cohort and cross-sectional, and observational studies that reported on the relationship between mild cognitive impairment and hearing loss were included.
Results
A total of 34 studies reporting data on 48 017 participants were included. Twenty-three studies observed a significant association between hearing loss and mild cognitive impairment. The pooled risk ratio across all studies of prevalence of mild cognitive impairment in people with hearing loss was 1.44 (random-effects; 95 per cent CI = 1.27–1.64; p < 0.00001; I2 = 0 per cent). Significantly more people with mild cognitive impairment had peripheral hearing loss compared with those without (risk ratio, 1.40 random-effects; 95 per cent CI = 1.10–1.77; p = 0.005; I2 = 0 per cent). When the incidence was studied, significantly more people with peripheral hearing loss had mild cognitive impairment compared with those without (risk ratio = 2.06 random-effects; 95 per cent CI = 1.35–3.15; p = 0.0008; I2 = 97 per cent); however; a high level of statistical heterogeneity was evident.
Conclusion
Most of the studies included in this systematic review observed a significant association between hearing loss and mild cognitive impairment.
Publisher
Cambridge University Press (CUP)
Subject
Otorhinolaryngology,General Medicine
Cited by
25 articles.
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