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Association between Hearing Loss and Cognitive Disorder: A Nationwide Population-Based Study
Hyun Jin Lee1, Young Hoon Joo1, Kyung Do Han2
1Department of Otolaryngology-Head and Neck Surgery, College of Medicine, The Catholic University of Korea, Seoul, Korea.
Yonsei Medical Journal
|April 28, 2021
Summary
Hearing loss, especially bilateral, is linked to cognitive decline in older South Koreans. Early detection and intervention for hearing impairment may support cognitive health.
Area of Science:
- Gerontology
- Epidemiology
- Audiology
Background:
- Cognitive disorders, including memory dysfunction, pose a significant public health challenge.
- Hearing loss is a prevalent condition in aging populations, with potential links to cognitive function.
Purpose of the Study:
- To examine the association between hearing loss and cognitive disorder with memory dysfunction.
- To compare the impact of unilateral versus bilateral hearing loss on cognitive function.
Main Methods:
- Analysis of cross-sectional data from 1,815,835 individuals aged 66 in South Korea.
- Auditory function assessed via pure-tone audiometry.
- Cognitive function evaluated using the Prescreening Korean Dementia Screening Questionnaire.
Main Results:
- Prevalence of unilateral hearing loss was 5.84% and bilateral hearing loss was 3.40%.
- Bilateral hearing loss was significantly associated with a higher risk of cognitive disorder with memory dysfunction (OR=1.183).
- Unilateral hearing loss also showed an association with cognitive impairment (OR=1.141).
Conclusions:
- Hearing loss significantly impacts cognitive function in the South Korean population.
- Bilateral hearing loss presents a greater risk for cognitive impairment compared to unilateral hearing loss.
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