Relationship of hearing loss and dementia: a prospective, population-based study.
Relationship of hearing loss and dementia: a prospective, population-based study.
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DOI:
10.1097/mao.0000000000000313
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发表时间:
2014-06
期刊:
影响因子:
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通讯作者:
Tschanz JT
中科院分区:
文献类型:
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作者:
Gurgel RK;Ward PD;Schwartz S;Norton MC;Foster NL;Tschanz JT
To determine whether baseline hearing loss increases cognitive decline and risk for all-cause dementia in a population of elderly individuals. Longitudinal cohort study Community-based, outpatient Men and women aged 65 years or older without dementia at baseline All subjects completed the Modified Mini-Mental Status Exam (3MS-R) at baseline and over 3 triennial follow-up visits. Hearing loss (HL) at baseline was based on observation of hearing difficulties during testing or interview. Incident dementia was determined by clinical assessment and expert consensus. Dementia and 3MS-R score. At baseline 4,463 subjects were without dementia, 836 of whom had HL. Of those with HL, 16.3% developed dementia, compared to 12.1% of those without HL (p<0.001). Mean time to dementia was 10.3 years in the HL group vs. 11.9 years for non-HL (Log Rank test p<0.001). In Cox regression analyses controlling for gender, presence of APOE- ε4 allele, education, and baseline age, and cardiovascular risk factors, HL was an independent predictor of developing dementia (Hazard ratio = 1.27, p=0.026 (95% CI = 1.03, 1.56). Linear mixed models controlling for similar covariates showed HL was associated with faster decline on the 3MS-R, at a rate of 0.26 points/year worse than those without HL. Elderly individuals with HL have an increased rate of developing dementia and more rapid decline on 3MS-R scores than their non-hearing impaired counterparts. These findings suggest that hearing impairment may be a marker for cognitive dysfunction in adults age 65 and older.