[Self-assessment of daily activities using the Duruöz Hand Index-Validation of the German translation]. / Selbstbeurteilung von Alltagsaktivitäten mittels Duruöz-Hand-Index ­ Validierung der deutschen Übersetzung.

BACKGROUND: Independence in activities of daily living depends to a large extent on the upper extremities; however, the instruments widely used in geriatrics to assess self-care abilities do not allow a focus on this body region. In order to map the fluctuating course of hand function-dependent daily living skills with a self-assessment instrument, rheumatologists have developed the Duruöz Hand Index (DHI). OBJECTIVE: The German translation authorized by Duruöz was tested for its applicability in the assessment of geriatric outpatient and day hospital patients and test quality criteria were determined. MATERIAL AND METHODS: Study participants completed the DHI three times. A postgraduate student blinded to the results performed an anamnesis and examination. The geriatric team made an inter-professional assessment of hand function-related daily living skills twice with at least 2­week intervals. RESULTS: Data collection was performed from 16 November 2016 to 27 April 2017 on 101 geriatric day hospital or outpatient patients. Retest reliability was high (0.937), as was internal consistency (Cronbach's α 0.949). Difficulty with activities of daily living correlated more closely with joint mobility (Keitel Index) and fine motor skills (20 cents test) than with hand strength. CONCLUSION: The DHI provides a survey of difficulties with activities of daily living that is focused on the upper extremities. Because about one in three patients required assistance (answering follow-up questions, reading aloud) despite the exclusion of patients with more severely impaired cognition and vision, the examiner should remain present.