Development of the Wheelchair Interface Questionnaire and initial face and content validity

Abstract

Background: Because resources are limited in low- and middle-income countries (LMIC), the development of outcome measures is of interest. Wheelchair outcome measures are useful to support evidence-based practice in wheelchair provision.Objectives: The Wheelchair Interface Questionnaire (WIQ) is being developed to provide a professional perspective on the quality of the interface between a wheelchair and its user. This article discusses the development of the WIQ and its face and content validity.Method: During field studies in Kenya, we sought to include professional report data on the wheelchair–user interface that could be analysed to inform design changes. None of the existing measures was focused on the interface between users and their wheelchairs. The WIQ was developed to meet this need. To investigate face and content validity, 24 experienced wheelchair professionals participated in a study that included two rounds of an online survey and a focus group in Kenya.Results: Responses were categorised by topic and the WIQ was modified following each iteration. Participants affirmed the usefulness of a brief professional report measure to provide a snapshot of the user–wheelchair interface. Participants emphasised the importance of brevity, wide applicability and provision of specific feedback for wheelchair modification or design changes. The focus group agreed that the final version provided useful data and was applicable to virtually all wheelchair users in LMIC.Conclusion: These preliminary studies indicate initial face and content validity of the WIQ as a method for providing a professional perspective on the interface between a user and his or her wheelchair.

Validation of a Short Scale for Student Evaluation of Teaching Ratings in a Polytechnic Higher Education Institution

“…Thus, face and content validity are taken into account during the process of developing an instrument. Face validity indicates whether an instrument seems appropriate, that is, face validity does not analyze what the instrument measures but what it appears to measure; i.e., the extent to which the items of a SET instrument appear relevant to a respondent (Spooren et al, 2013 ; Rispin et al, 2019 ). Content validity refers to whether the content of an instrument has been included in an exhaustive and representative way, that is, if the content has been included in an appropriate way.…”

Preliminary steps of the development of a Minimum Uniform Dataset applicable to the international wheelchair sector

“…Efforts targeted at LMICs to measure wheelchair provision outcomes longitudinally have used different measurements, and a significant group of people were lost to follow-up, making it impossible to aggregate the data [ 34 – 37 ]. Outcomes that are important for users and families is also lacking [ 33 ], and instead, outcomes focus on the interface between the user and the wheeled mobility device [ 38 ], the working condition of the wheelchair [ 39 , 40 ], or outcomes related to specific mobility skills interventions [ 41 ]. There are two recent large dataset examples specific to wheelchair service in high-income settings.…”