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The inter-rater reliability of the Wheelchair Interface Questionnaire.
Abigail Bridey Davis1, Vicki Sheafer2, Karen Rispin1
1LeTourneau University, Longview, TX, USA.
Disability and Rehabilitation. Assistive Technology
|August 17, 2019
Summary
The Wheelchair Interface Questionnaire (WIQ) is a reliable tool for assessing wheelchair-user fit, crucial for evidence-based practice in assistive technology. This study confirmed its strong inter-rater reliability, supporting its use in diverse settings.
Area of Science:
- Rehabilitation science
- Assistive technology
- Clinical assessment tools
Background:
- Wheelchair outcomes measures are vital for evidence-based practice, particularly in low- and middle-income countries (LMICs).
- The Wheelchair Interface Questionnaire (WIQ) was developed to capture professional perspectives on wheelchair-user interface quality.
- Previous studies confirmed the WIQ's face and content validity.
Purpose of the Study:
- To investigate the inter-rater reliability of the Wheelchair Interface Questionnaire (WIQ).
- To assess the WIQ's utility in a school for children with disabilities in Kenya.
Main Methods:
- Eight experienced practitioners evaluated eight wheelchairs and their users.
- Inter-rater reliability was calculated using the intraclass correlation coefficient (ICC) in SPSS.
Main Results:
- The WIQ demonstrated strong inter-rater reliability with an ICC of 0.911.
- Qualitative data from the WIQ provided meaningful insights.
- The WIQ was found to be a brief assessment tool.
Conclusions:
- The WIQ is a reliable instrument for professional assessment of the wheelchair-user interface.
- Its reliability supports evidence-based wheelchair provision and rehabilitation.
- The WIQ can inform clinical recommendations, funding requests, and design improvements.
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