Visuoperceptual Analysis of the Videofluoroscopic Study of Swallowing: An International Delphi Study

Swan, Katina, Cordier, Reinie, Brown, Ted and Speyer, Renée (2021) Visuoperceptual Analysis of the Videofluoroscopic Study of Swallowing: An International Delphi Study. Dysphagia, 36 (4). pp. 595-613. ISSN 0179-051X

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Introduction: The Videofluoroscopic Swallow Study (VFSS) is a commonly used dysphagia assessment that is routinely analysed visuoperceptually. However, no consensus exists regarding which visuoperceptual measures should be used to analyse VFSSs. Current visuoperceptual measures for VFSSs are limited by poor quality and incomplete or indeterminate psychometric properties.

Objective: This study aimed to establish the content validity for a new visuoperceptual VFSS measure for oropharyngeal dysphagia in adults, by identifying relevant domains of the construct and generating items and corresponding response scales.

Methods: Consensus among experts in dysphagia and VFSS from over 20 countries was achieved across three rounds of anonymous online surveys, using the Delphi technique. Participants judged relevance and comprehensiveness of definitions of visuoperceptual domains of VFSS and the relevance of various domains to the overall construct. After reaching consensus on definitions of relevant domains, consensus on items were established using the same process.

Results: Participants achieved consensus on definitions of 32 domains recommended for analysis, and at least one item per domain (range 1–4). Domains selected by participants included both those which occur in existing measures and domains which have not been included in any measures to date. This study will form the basis for content validity of a new measure for VFSS.

Conclusions: This first phase of developing a visuoperceptual measure of VFSS resulted in the identification of 32 domains and 60 items for oropharyngeal dysphagia. Developers can now advance to the next phase of measure construction; prototype development and psychometric testing.

Item Type: Article
Additional Information: Funding information: Funding was provided by Curtin University of Technology.
Uncontrolled Keywords: Videofluoroscopy, Modified barium swallow, Deglutition, Measure, Content validity, Instrument development
Subjects: A100 Pre-clinical Medicine
B600 Aural and Oral Sciences
B900 Others in Subjects allied to Medicine
Department: Faculties > Health and Life Sciences > Social Work, Education and Community Wellbeing
Depositing User: John Coen
Date Deposited: 08 Oct 2020 12:56
Last Modified: 04 Sep 2021 03:30

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