, Volume 4, Issue 4, pp 236–242 | Cite as

Test-retest variability in normal swallowing

  • Gregory L. Lof
  • JoAnne Robbins


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-aged 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.

Key words

Swallowing, duration measures Swallowing, normal variability Videofluoroscopy 


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Copyright information

© Springer-Verlag New York Inc. 1990

Authors and Affiliations

  • Gregory L. Lof
    • 1
    • 2
  • JoAnne Robbins
    • 1
    • 3
  1. 1.Department of NeurologyUniversity of Wisconsin-MadisonMadisonUSA
  2. 2.Department of Communicative DisordersUniversity of Wisconsin-MadisonMadisonUSA
  3. 3.Neurology ServicesVA HospitalMadisonUSA

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