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Measuring Functional Status in Huntington's Disease
Jessie S Gibson1, Sheila H Ridner2, Mary S Dietrich2,3
1School of Nursing, University of Virginia, Charlottesville, Virginia, USA.
Summary
In Huntington's disease (HD), neuropsychiatric, cognitive, and motor symptoms significantly impair function, especially when measured by the Adult Functional Adaptive Behavior (AFAB) scale. The Total Functional Capacity (TFC) scale is less sensitive to these changes.
Area of Science:
- Neuroscience
- Clinical Neurology
- Movement Disorders
Background:
- Huntington's disease (HD) presents significant neuropsychiatric and cognitive challenges.
- Existing functional status measures like the Total Functional Capacity (TFC) scale may not fully capture the impact of these symptoms.
Purpose of the Study:
- To evaluate the impact of motor, cognitive, and neuropsychiatric symptoms on functional status in individuals with HD.
- To compare the efficacy of the TFC scale versus the Adult Functional Adaptive Behavior (AFAB) scale in assessing functional status in HD.
Main Methods:
- Utilized multiple regression analyses to examine the relationship between symptom domains and functional status.
- Assessed functional status using both the TFC and AFAB scales.
Main Results:
- A greater burden of neuropsychiatric, cognitive, and motor symptoms correlated with increased functional impairment on the AFAB scale.
- Only motor symptoms showed a significant association with TFC scores.
- The three symptom domains collectively explained more variance in AFAB scores than in TFC scores.
Conclusions:
- The TFC scale may have limited utility for measuring functional status in HD, particularly in early stages.
- The AFAB scale offers a more comprehensive assessment of functional status in HD research.
