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Disability-Adjusted Life Expectancy and Cognitive Function among Community-Dwelling Adults
Sanghun Nam1, Brian Downer2, Suna Cha1
1Department of Occupational Therapy, Graduate School, Yonsei University, Wonju-si, Gangwon-do, Republic of Korea.
Evaluation & the Health Professions
|May 24, 2023
Summary
Disability-adjusted life expectancy (DALE) in Korean older adults varies by cognitive status, sex, and education. Higher education correlated with longer DALE, while sex differences were notable only in those with normal cognition.
Area of Science:
- Gerontology
- Public Health
- Epidemiology
Background:
- Aging populations present unique health challenges.
- Cognitive impairment significantly impacts life expectancy.
- Understanding demographic variations in health outcomes is crucial for targeted interventions.
Purpose of the Study:
- To calculate disability-adjusted life expectancy (DALE) for Korean older adults.
- To analyze DALE based on sex, educational attainment, and residential region across different cognitive statuses.
- To inform health policies for the aging Korean population.
Main Methods:
- Utilized data from the Korean Longitudinal Study of Aging (KLoSA) seventh survey.
- Included 3,854 participants aged 65-91 years.
- Assessed cognitive function (normal, moderately impaired, severely impaired) and physical independence to calculate DALE.
Main Results:
- Females with normal cognition had a higher DALE (7.60 years) than males (6.76 years).
- DALE was comparable between sexes for cognitive impairment.
- DALE increased with higher educational attainment.
- Urban dwellers showed higher DALE for normal/moderate cognitive impairment, while rural dwellers did for severe impairment, though not statistically significant.
Conclusions:
- Demographic factors like sex, education, and residence influence DALE in older Koreans.
- Cognitive status is a key determinant of DALE.
- Findings underscore the need for tailored health policies and treatments for the aging population.
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