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  • Title: Reliability of Untrained and Experienced Raters on FEES: Rating Overall Residue is a Simple Task.
    Author: Pisegna JM, Borders JC, Kaneoka A, Coster WJ, Leonard R, Langmore SE.
    Journal: Dysphagia; 2018 Oct; 33(5):645-654. PubMed ID: 29516172.
    Abstract:
    The purpose of this study was to investigate the reliability of residue ratings on Fiberoptic Endoscopic Evaluation of Swallowing (FEES). We also examined rating differences based on experience to determine if years of experience influenced residue ratings. A group of 44 raters watched 81 FEES videos representing a wide range of residue severities for thin liquid, applesauce, and cracker boluses. Raters were untrained on the rating scales and simply rated their overall impression of residue amount on a visual analog scale (VAS) and a five-point ordinal scale in a randomized fashion across two sessions. Intra-class correlation coefficients, kappa coefficients, and ANOVAs were used to analyze agreement and differences in ratings. Residue ratings on both the VAS and ordinal scales had acceptable inter- and intra-rater reliability. Inter-rater agreement was acceptable (ICC > 0.7) for all comparisons. Intra-rater agreement was excellent on the VAS scale (rc = 0.9) and good on the ordinal scale (k = 0.78). There was no significant difference between expert ratings and other raters based on years of experience for cracker ratings (p = 0.2119) and applesauce ratings (p = 0.2899), but there was a significant difference between clinicians on thin liquid ratings (p = 0.0005). Without any specific training, raters demonstrated high reliability when rating the overall amount of residue on FEES. Years of experience with FEES did not influence residue ratings, suggesting that expert ratings of overall residue amount are not unique or specialized. Rating the overall amount of residue on FEES appears to be a simple visual-perceptual task for puree and cracker boluses.
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