Rasch analysis of the patient-rated wrist evaluation questionnaire

Archives of Physiotherapy
Saravanan EsakkiRuby Grewal

Abstract

The Patient-Rated Wrist Evaluation (PRWE) was developed as a wrist joint specific measure of pain and disability and evidence of sound validity has been accumulated through classical psychometric methods. Rasch analysis (RA) has been endorsed as a newer method for analyzing the clinical measurement properties of self-report outcome measures. The purpose of this study was to evaluate the PRWE using Rasch modeling. We employed the Rasch model to assess overall fit, response scaling, individual item fit, differential item functioning (DIF), local dependency, unidimensionality and person separation index (PSI). A convenience sample of 382 patients with distal radius fracture was recruited from the hand and upper limb clinic at large academic healthcare organization, London, Ontario, Canada, 6-month post-injury scores of the PRWE was used. RA was conducted on the 3 subscales (pain, specific activities, and usual activities) of the PRWE separately. The pain subscale adequately fit the Rasch model when item 4 "Pain - When it is at its worst" was deleted to eliminate non-uniform DIF by age group, and item 5 "How often do you have pain" was rescored by collapsing into 8 intervals to eliminate disordered thresholds. Uniform DIF for "Use ...Continue Reading

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Citations

Feb 23, 2019·BMC Medical Research Methodology·Michael RobinsonJoy C MacDermid
Oct 3, 2018·Current Treatment Options in Oncology·Augusta SilveiraTeresa Sequeira
Nov 4, 2020·Journal of Hand Therapy : Official Journal of the American Society of Hand Therapists·L WoythalS Brorson

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Software Mentioned

CTT
RUMM
Rasch
SPSS

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