Journal
DYSPHAGIA
Volume 32, Issue 5, Pages 601-616Publisher
SPRINGER
DOI: 10.1007/s00455-017-9809-z
Keywords
Deglutition; Deglutition disorders; Dysphagia; Penetration-aspiration; Videofluoroscopy; Statistics
Categories
Funding
- NIDCD NIH HHS [R01 DC011020] Funding Source: Medline
Ask authors/readers for more resources
The 8-point Penetration-Aspiration Scale (PAS) was introduced to the field of dysphagia in 1996 and has become the standard method used by both clinicians and researchers to describe and measure the severity of airway invasion during swallowing. In this article, we review the properties of the scale and explore what has been learned over 20 years of use regarding the construct validity, ordinality, intervality, score distribution, and sensitivity of the PAS to change. We propose that a categorical revision of the PAS into four levels of increasing physiological severity would be appropriate. The article concludes with a discussion of common errors made in the statistical analysis of the PAS, proposing that frequency distributions and ordinal logistic regression approaches are most appropriate given the properties of the scale. A hypothetical dataset is included to illustrate both the problems and strengths of different statistical approaches.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available