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Self-reported causes of physical disability in older people: the Cardiovascular Health Study. CHS Collaborative
W H Ettinger1, L P Fried, T Harris
1Department of Internal Medicine, Bowman Gray School of Medicine of Wake Forest University, Winston-Salem, NC 27157-1051.
Insights
Chronic diseases like arthritis significantly impair daily functioning in older adults. Self-reported causes of disability are generally accurate but influenced by factors like gender and health status.
Area of Science:
- Gerontology
- Public Health
- Epidemiology
Background:
- Aging populations experience diverse functional limitations impacting daily life.
- Understanding the specific causes of disability is crucial for targeted interventions.
Purpose of the Study:
- To identify primary conditions causing difficulty in 17 physical tasks among community-dwelling older adults.
- To assess the criterion validity of self-reported diseases as causes of functional difficulty.
Main Methods:
- Cross-sectional analysis of observational cohort data from 5201 community-dwelling individuals aged 65 and older.
- Data collected from research clinics across four US communities.
Main Results:
- Arthritis and musculoskeletal diseases were the leading causes of difficulty (49.0%), followed by heart disease (13.7%) and injury (12.0%).
- Disease-specific limitations were observed: arthritis affected most tasks, while heart/lung diseases impacted aerobic capacity, and stroke affected upper extremity function.
- High consistency (91%) between reported diseases/symptoms and disability; self-reported diagnoses confirmed in 85% of men and 71% of women.
Conclusions:
- Age-related chronic diseases are major contributors to disability in older adults, with disability type linked to the specific disease.
- Self-reported causes of disability are generally accurate but moderated by gender, health status, and disease type.
Objective:
To determine the major conditions and symptoms reported to cause difficulty in 17 physical tasks of daily life and the criterion validity of self-report of diseases given as the causes of the difficulty in functioning, in community-dwelling older people.
Design:
Cross sectional analyses of data obtained in an observational cohort study.
Setting:
Research clinics in four US communities: Winston-Salem, NC, Hagerstown, MD, Pittsburgh, PA, and Sacramento, CA.
Participants:
5201 community-dwelling people > or = 65 years old.
Results:
Arthritis and other musculoskeletal diseases were given as the primary causes of difficulty in performing physical tasks by 49.0% of the participants reporting difficulty in any task, followed by heart disease (13.7%), injury (12.0%), old age (11.7%), lung disease (6.0%), and stroke (2.9%). The self-reports of diseases that caused disability varied by task. Whereas arthritis was given as a cause of difficulty in most of the 17 different tasks, heart and lung disease were more likely to be reported as causing difficulty with activities requiring high aerobic work capacity such as walking one-half mile or doing heavy housework. Stroke was more likely to be reported as causing difficulty with use of the upper extremities and in performing basic activities of daily living. There was a high degree of consistency (91%) between the diseases and symptoms reported to cause disabilities. The percentage of people who reported a disease as the cause of their difficulty performing a task and had independent confirmation of the diagnosis was 85% in men and 71% in women, and varied according to type of disease and the individual's cognitive status and health status.
Conclusion:
These data suggest that age-related chronic diseases are important causes of disability in older people but that the type of disability is dependent on the underlying disease that causes the disability. Also, self-report of the cause of disability appears to be generally accurate but is influenced by gender, health status, and type of disease.
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