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  • Title: Assessment of adaptive functioning in Huntington's disease.
    Author: Bylsma FW, Rothlind J, Hall MR, Folstein SE, Brandt J.
    Journal: Mov Disord; 1993 Apr; 8(2):183-90. PubMed ID: 8474487.
    Abstract:
    The Huntington's Disease Activities of Daily Living (HD-ADL) scale is a 17-item informant-completed instrument for rating adaptive functioning in Huntington's disease (HD) patients. To assess the reliability and clinical correlates of the HD-ADL, it was administered along with the Mini-Mental State Exam (MMSE) and Quantified Neurological Exam (QNE) to 93 HD patients. The HD-ADL has high internal consistency (coefficient alpha = 0.91). Principal components factor analysis of the HD-ADL revealed four factors (General Functioning, Domestic Activities, Home Upkeep, and Family Relationships) accounting for 72% of the total variance. MMSE score, motor impairment score, and duration of disease were the best predictors of HD-ADL score. Similar results were obtained in an independent replication sample of patients. The HD-ADL scores correlate with Shoulson and Fahn's total functional capacity (TFC) index (r = -0.89). The HD-ADL scale is a reliable and valid instrument for assessing adaptive function in HD patients.
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