NYMC Faculty Publications
DOI
10.1016/j.apmr.2018.01.012
Journal Title
Archives of Physical Medicine and Rehabilitation
First Page
934
Last Page
944
Document Type
Article
Publication Date
5-1-2018
Department
Speech-Language Pathology
Abstract
OBJECTIVE: To assess consensual validity, interrater reliability, and criterion validity of the International Dysphagia Diet Standardisation Initiative Functional Diet Scale, a new functional outcome scale intended to capture the severity of oropharyngeal dysphagia, as represented by the degree of diet texture restriction recommended for the patient. DESIGN: Participants assigned International Dysphagia Diet Standardisation Initiative Functional Diet Scale scores to 16 clinical cases. Consensual validity was measured against reference scores determined by an author reference panel. Interrater reliability was measured overall and across quartile subsets of the dataset. Criterion validity was evaluated versus Functional Oral Intake Scale (FOIS) scores assigned by survey respondents to the same case scenarios. Feedback was requested regarding ease and likelihood of use. SETTING: Web-based survey. PARTICIPANTS: Respondents (N=170) from 29 countries. INTERVENTIONS: Not applicable. MAIN OUTCOME MEASURES: Consensual validity (percent agreement and Kendall tau), criterion validity (Spearman rank correlation), and interrater reliability (Kendall concordance and intraclass coefficients). RESULTS: The International Dysphagia Diet Standardisation Initiative Functional Diet Scale showed strong consensual validity, criterion validity, and interrater reliability. Scenarios involving liquid-only diets, transition from nonoral feeding, or trial diet advances in therapy showed the poorest consensus, indicating a need for clear instructions on how to score these situations. The International Dysphagia Diet Standardisation Initiative Functional Diet Scale showed greater sensitivity than the FOIS to specific changes in diet. Most (>70%) respondents indicated enthusiasm for implementing the International Dysphagia Diet Standardisation Initiative Functional Diet Scale. CONCLUSIONS: This initial validation study suggests that the International Dysphagia Diet Standardisation Initiative Functional Diet Scale has strong consensual and criterion validity and can be used reliably by clinicians to capture diet texture restriction and progression in people with dysphagia.
Recommended Citation
Steele, C., Namasivayam-MacDonald, A., Guida, B., Cichero, J., Duivestein, J., Hanson, B., Lam, P., & Riquelme, L. (2018). Creation and Initial Validation of the International Dysphagia Diet Standardisation Initiative Functional Diet Scale. Archives of Physical Medicine and Rehabilitation, 99 (5), 934-944. https://doi.org/10.1016/j.apmr.2018.01.012
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