Test-retest variability in normal swallowing.
The test-retest variability of the modified barium swallow study using videofluoroscopy was analyzed. Sixteen normal subjects (8 men, 8 women) were organized into 2 age groups: middle-aged group (mean, 45 years) and old-age group (mean, 66 years). Nine durational measures of the swallow were evaluated. There were no statistically significant differences for any of the measures between the initial test and a retest conducted days later. The findings suggest that, on the whole, normal subjects perform similarly on test and a retest. However, the variability displayed by these normal subjects may be clinically significant, indicating that test-retest swallowing duration measures require careful interpretation.
Department of Neurology, University of Wisconsin-Madison.
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D000328:Adult; D000368:Aged; D003679:Deglutition / Q000502:physiology*; D004947:Esophagus / Q000502:physiology; D005260:Female; D005471:Fluoroscopy; D005502:Food; D006801:Humans; D006928:Hyoid Bone / Q000502:physiology; D008297:Male; D008875:Middle Aged; D009055:Mouth / Q000502:physiology; D009960:Oropharynx / Q000502:physiology; D015203:Reproducibility of Results; D014743:Videotape Recording