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  4. 中風病人手功能量表之發展(3/3)
 
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中風病人手功能量表之發展(3/3)

Date Issued
2005
Date
2005
Author(s)
謝清麟
DOI
932314B002028
URI
http://ntur.lib.ntu.edu.tw//handle/246246/27574
Abstract
Objective: To validate the unidimensionality of the Action Research Arm Test (ARAT) by Mokken scale analysis and to examine whether the ordinal raw sum scores of ARAT can be transformed to interval scores via the Rasch rating scale model. Subjects and Methods: A total of 351 patients were recruited from five rehabilitation departments located in four regions of Taiwan. The 19-item ARAT was administered to all the subjects by a physical therapist. The data were analyzed by Mokken analysis, followed by Rasch analysis. Results: The results strongly supported a unidimensional scale of the 19-item ARAT by Mokken analysis, with the scalability coefficient H = 0.95. Except for the item “pinch ball bearing 3rd finger and thumb”, the remaining 18 ARAT items form a constant hierarchical scale for all stroke patients. On the other hand, the Rasch analysis, with a stepwise deletion of misfit items, showed that only 4 items (“grasp ball”, “grasp block 5 cm3”, “grasp block 2.5 cm3”, and “grip tube 1 cm”) fit the rating scale model's expectation. Conclusions: Our results provided strong evidence that the ARAT forms a unidimensional scale for patients with stroke. However, the results did not support the premise that the ordinal total raw sum scores of the ARAT can be transformed into interval Rasch scores. Thus, patients can be ranked on their upper extremity functional abilities by the raw sum scores, but equal differences in these scores do not imply equal differences in functional status. The score changes within patients and the score differences between patients can only give us the information about order of the patients, but not represent exact function of them.
Publisher
臺北市:國立臺灣大學醫學院職能治療學系暨研究所
Type
journal article
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