Modification of the Upper Limb Functional Index to a Three-point Response Improves Clinimetric Properties
|dc.identifier.citation||Gabel, C. and Michener, L. and Melloh, M. and Burkett, B. 2010. Modification of the Upper Limb Functional Index to a Three-point Response Improves Clinimetric Properties. Journal of Hand Therapy. 23 (1): pp. 41-52.|
Study Design: Observational two-stage. Introduction: To achieve optimal clinimetric properties for outcome measures, both practical and psychometric, ongoing improvements are required. Purpose of the Study: To evaluate if the Upper Limb Functional Index (ULFI) clinimetric properties are improved by modification to a three-point response option and to verify the factor structure. Methods: Stage 1, calibration (n = 139) used ULFI dichotomous responses, and stage 2, validation (n = 117) used a three-point response option. The clinimetric properties were compared in physical therapy outpatients with the QuickDASH as the reference standard. Repeated measurements were made at two to four weekly intervals. Results: The ULFI three-point response option improved reliability [intraclass correlation coefficient (2,1) = 0.98], internal consistency (a = 0.92), QuickDASH concurrent validity (r = 0.86), and responsiveness. Minimal detectable change (90% confidence interval) was 7.9%, and factor structure was unidimensional. Missing responses were <0.5%, and practical characteristics were unchanged. Conclusions: The enhanced reliability and reduced errors with unchanged practicality demonstrate the ULFI improvements through modification to a three-point response option. Level of Evidence: 2c. Crown Copyright © 2010.
|dc.title||Modification of the Upper Limb Functional Index to a Three-point Response Improves Clinimetric Properties|
|dcterms.source.title||Journal of Hand Therapy|
|curtin.department||Curtin Medical School|
|curtin.accessStatus||Fulltext not available|
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