Mediators of Functional Disability at Mid- and Late-Life.

Area of Science:

• Gerontology
• Public Health
• Epidemiology

Background:

• The U.S. is experiencing a demographic shift with a growing older adult population.
• Evidence indicates an increase in functional disability among older adults entering late life.
• Understanding factors contributing to functional disability is crucial for public health initiatives.

Purpose of the Study:

• To identify demographic variables and health conditions associated with functional disability in adults aged 45 and older.
• To examine the specific contributions of age, sex, race, chronic physical health conditions, and depression to functional ability.
• To explore potential intervention pathways for functional disability in midlife.

Main Methods:

• Utilized data from the 2020 Behavioral Risk Factor Surveillance System survey.
• Analyzed data from 243,693 adults aged 45 years and older.
• Employed structural equation modeling (AMOS 29.0.0) to test associations among variables.

Main Results:

• Confirmed that age, sex, and racial background are significant predictors of functional disability.
• Identified chronic physical health conditions and depression as key contributors to functional disability.
• The model explained 26.7% of the variance in functional ability (R² = .267).

Conclusions:

• Replicated previous findings on demographic influences on functional disability.
• Extended research by highlighting physical and emotional health as critical factors influencing functional ability.
• Suggests that interventions targeting physical and mental health in midlife may mitigate future functional disability.