Content Validity and Intra‐Inter Reliability of the Turkish Version of the Murray Secretion Scale

What is already known on this subject The Murray Secretion Scale (MSS) is a widely used tool for assessing the severity of secretions during fiberoptic endoscopic evaluation of swallowing (FEES). Before this study, a Turkish version of the MSS with verified content validity for use in Turkish-speaking clinical settings did not exist. Standardized secretion severity ratings improve consistency in dysphagia evaluation and allow consistent reporting across studies and clinical environments. Consistent assessment of mid-range secretion levels may be challenging and could necessitate clinician training and calibration. What this paper adds to existing knowledge This study introduces the first Turkish translation and cultural adaption of the MSS (MSS-TR), addressing the lack of a standardized tool for assessing secretion severity among Turkish-speaking clinicians. The MSS-TR shown strong content validity and high intra- and inter-rater reliability, supporting its application as a reliable clinical and research tool during FEES. Findings suggest that moderate secretion severity (Grade 2) may present significant issues for clinical interpretation, highlighting the importance for clinician training and calibration in the use of the scale. The validated Turkish version of the MSS aims to improve standards in dysphagia evaluation, support clinical decision-making and facilitate international comparison of FEES-based research results. What are the potential or actual clinical implications of this work? The MSS-TR enables a systematic assessment of secretion severity in Turkish FEES practice, improving documentation and supporting clinical decision-making in dysphagia management. Routine use of MSS-TR may improve communication among clinicians and institutions, as well as support training, standardization and quality assurance procedures. A validated MSS-TR supports international comparison and multi-centre FEES research through standardized secretion reporting.