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Published on: June 10, 2013
Measuring satisfaction with orthotic and prosthetic devices
Callie E Tyner1, Aaron J Boulton1, Jerry Slotkin1
1Center for Health Assessment Research and Translation, University of Delaware, Newark, DE, USA.
Summary
A new 15-item measure for satisfaction with orthoses and prostheses was developed and validated for the Limb Injury Measurement Battery for Quality of Life (LIMB-QOL). This reliable tool assesses device satisfaction and adaptation for individuals with limb differences.
Area of Science:
- Orthotics and Prosthetics
- Rehabilitation Medicine
- Psychometrics
Background:
- Assessing patient satisfaction with orthoses and prostheses is crucial for improving quality of life.
- Existing measures may not adequately capture the multifaceted aspects of user satisfaction and adaptation.
Purpose of the Study:
- To develop and validate a reliable measure of satisfaction with orthoses and prostheses for the Limb Injury Measurement Battery for Quality of Life (LIMB-QOL).
Main Methods:
- Item response theory was used to develop and calibrate a pool of 65 items assessing device performance, aesthetics, and user adaptation.
- Psychometric analysis, including internal consistency and test-retest reliability, was conducted on 471 individuals.
Main Results:
- A 15-item bank, the LIMB-QOL Satisfaction with Orthosis/Prosthesis measure, was calibrated with strong psychometric properties (Cronbach's alpha = 0.95, test-retest reliability = 0.79).
- The measure demonstrated acceptable fit to a unidimensional model and applicability across various limb injuries and device types.
- It can be administered as a computerized adaptive test or a 7-item short form.
Conclusions:
- The LIMB-QOL Satisfaction with Orthosis/Prosthesis is a reliable and valid measure for individuals with limb-affecting injuries and sudden-onset illnesses.
- It is suitable for broad use in monitoring quality of life outcomes, particularly after major extremity trauma.
- Further validation is recommended for individuals with dysvascular or degenerative conditions.
