Introduction: There is no patient-reported outcome (PRO) questionnaire specifically designed to assess oropharyngeal dysphagia in oculopharyngeal muscular dystrophy (OPMD). To select a suitable questionnaire, content validity of the existing questionnaires must be assessed. This study sought (1) to identify dysphagia-related symptoms in OPMD and (2) to assess content validity of currently available PRO for the assessment of dysphagia severity in OPMD.
Methods: A two-step literature review was conducted of dysphagia-related symptom identification and oropharyngeal dysphagia-related PRO. Symptoms were validated with an expert panel by using a Delphi survey. Content validity of PRO questionnaires was documented through content analysis.
Results: Ten PRO questionnaires were identified. None of the questionnaires cover the entire symptom spectrum in OPMD and thus lack content validity.
Discussion: The development and validation of a new PRO questionnaire to assess dysphagia in OPMD is required to establish the importance of symptomatic relief from new treatments. Muscle Nerve 59:445-450, 2019.
Keywords: content validity; dysphagia symptoms; oculopharyngeal muscular dystrophy; oropharyngeal dysphagia; patient-reported outcome.
© 2018 Wiley Periodicals, Inc.