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Hearing Decline Trajectories as a Stronger Predictor of Dementia than Visual Impairment: A Latent Growth Modeling Approach

Date
2025/04/17
Affiliation
이화여자대학교 언어병리학과
Event Location
서울대학교병원 의생명연구원
Speaker
신준영
Objective: To investigate whether hearing and vision impairments predict likelihood of progressing to mild cognitive impairment (MCI) and dementia, and to compare their relative contributions to dementia risk using longitudinal data.
Methods: Data from the Korea Longitudinal Study of Aging (KLoSA), which includes nine waves of data (2006-2022) from 6,057 participants, were analyzed. Latent growth modeling was applied to estimate the independent effects of hearing and vision impairments over time. These latent factors were used in multinomial logistic regression to predict MCI and dementia diagnoses, controlling for age.
Results: A steeper decline in hearing (slope) significantly predicted the likelihood of developing dementia, whereas baseline vision impairment (intercept) was more strongly associated with the likelihood of progressing to MCI.
Conclusions: A rapid decline in hearing, particularly the rate of change over time rather than baseline hearing impairment, is a stronger predictor of dementia than vision decline.