A new classification of function and disability in China: subtypes based on performance-based and self-reported...

Area of Science:

• Gerontology
• Public Health
• Epidemiology

Background:

• Aging populations present complex challenges in understanding functional status and disability.
• Existing classification methods may not fully capture the nuances of function and disability in older adults.
• Identifying predictors is crucial for targeted interventions and health policy.

Purpose of the Study:

• To introduce a novel classification system for function and disability in Chinese older adults.
• To investigate the incidence and prevalence of different function and disability subtypes.
• To identify key predictors associated with these subtypes.

Main Methods:

• Utilized data from 16,020 older adults from the 2002 Chinese Longitudinal Healthy Longevity Survey (CLHLS).
• Defined function and disability subtypes by integrating physical performance (PP) tests with self-reported activities of daily living (ADL) assessments.
• Employed a combined approach of objective performance measures and subjective self-assessments.

Main Results:

• The most common subtype identified was physical performance limitations without dependence in activities of daily living.
• Rural residence was associated with greater independence in ADL despite physical limitations.
• Urban residence increased the likelihood of ADL dependence, irrespective of physical performance status.

Conclusions:

• Combining self-reported and performance-based assessments offers a robust method for classifying distinct subtypes of function and disability.
• These subtypes exhibit varying epidemiological rates of incidence.
• Social, medical, and environmental factors serve as significant predictors for different function and disability profiles.