A novel study on association between untreated hearing loss and cognitive functions of older adults : baseline non-verbal cognitive assessment results

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dc.contributor.author Jayakody, D.M.P.
dc.contributor.author Friedland, P.L.
dc.contributor.author Eikelboom, Robert H.
dc.contributor.author Martins, R.N.
dc.contributor.author Sohrabi, H.R.
dc.date.accessioned 2017-08-23T07:09:36Z
dc.date.issued 2018-02
dc.description.abstract BACKGROUND : Age-related hearing loss (ARHL) is highly prevalent in older adults, and more than two-thirds above age of 70 years suffer from ARHL. Recent studies have established a link between ARHL and cognitive impairment; however, most of the studies have used verbally loaded cognitive measures to investigate the association between ARHL and cognition. It is possible that due to hearing impairment, the elderly may experience difficulty in following verbal instructions or completing tasks that heavily rely on hearing during cognitive assessments. This may result in overestimation of cognitive impairment in such individuals. This baseline cross-sectional study investigated the associations between untreated hearing loss and a number of cognitive functions using a battery of non-verbal cognitive tests. Further, association between hearing loss and psychological status of older adults was examined. STUDY DESIGN : Prospective case-controlled study. METHODS : A total of 119 participants (54 males, M=66.33±10.50 years; 65 females M=61.51±11.46 years) were recruited. All participants completed a hearing assessment, a computerised test battery of non-verbal cognitive functions and the depression, anxiety and stress scale. RESULTS : Hierarchical multiple regression analysis results revealed that hearing thresholds significantly associated with the working memory (P<0.05), paired associative learning scores (P<0.05), depression (P<0.001), and anxiety (P<0.001) and stress (P<0.001) scores. Analysis of covariance results revealed that participants with moderately-severe hearing loss performed significantly poorer in paired associative learning and working memory tasks and psychological function tests compared to those with normal hearing. CONCLUSION : Results of the current study suggest a significant relationship between ARHL and both cognition and psychological status. Our results also have some implications for using non-verbal cognitive tests to evaluate cognitive functions in post-lingually hearing impaired ageing adults, at least for those with more than moderately-severe levels of hearing loss. en_ZA
dc.description.department Speech-Language Pathology and Audiology en_ZA
dc.description.embargo 2019-02-01
dc.description.librarian hj2017 en_ZA
dc.description.sponsorship Cochlear Ltd. en_ZA
dc.description.uri http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1749-4486 en_ZA
dc.identifier.citation Jayakody, D.M.P., Friedland, P.L., Eikelboom, R.H., Martins, R.N., Sohrabi, H.R. 2018, 'A novel study on association between untreated hearing loss and cognitive functions of older adults : baseline non-verbal cognitive assessment results', Clinical Otolaryngology, vol. 43, no. 1, pp. 182-191. en_ZA
dc.identifier.issn 1749-4478 (print)
dc.identifier.issn 1749-4486 (online)
dc.identifier.other 10.1111/coa.12937
dc.identifier.uri http://hdl.handle.net/2263/61765
dc.language.iso en en_ZA
dc.publisher Wiley en_ZA
dc.rights © 2017 John Wiley & Sons Ltd. This is the pre-peer reviewed version of the following article : 'A novel study on association between untreated hearing loss and cognitive functions of older adults : baseline non-verbal cognitive assessment results', Clinical Otolaryngology, vol. 43, no. 1, pp. 182-191, 2018, doi : 10.1111/coa.12937. The definite version is available at : http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1749-4486. en_ZA
dc.subject Age-related hearing loss (ARHL) en_ZA
dc.subject Older adults en_ZA
dc.subject Cognitive impairment en_ZA
dc.subject Cognition en_ZA
dc.subject Hearing impairment en_ZA
dc.subject Hearing loss en_ZA
dc.subject Psychological status en_ZA
dc.title A novel study on association between untreated hearing loss and cognitive functions of older adults : baseline non-verbal cognitive assessment results en_ZA
dc.type Postprint Article en_ZA


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