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. Author manuscript; available in PMC: 2015 Jun 17.
Published in final edited form as: Dysphagia. 2015 Apr 29;30(3):349–356. doi: 10.1007/s00455-015-9606-5

Table 1.

Means and 95% confidence intervals for measures of residue and pharyngeal constriction

Swallows displaying residue within normal limits (N = 143) Swallows displaying vallecular residue above normal limits (N = 65) Swallows displaying pyriform sinus residue above normal limits (N = 55)
Mean 95% confidence interval Mean 95% confidence interval Mean 95% confidence interval
Vallecular Residue (NRRSv) 0.01 0.00 to 0.02 0.16 0.1 to 0.23 N/A N/A
Pyriform Sinus Residue (NRRSp) 0.00 0.00 to 0.00 N/A N/A 0.27 0.13 to 0.4
Normalized Area on Frame of Maximum Pharyngeal Constriction (MPCAN) 0.02 0.015 to 0.022 0.12 0.1 to 0.14 0.15 0.12 to 0.18
Normalized Area on Frame of Post-Swallow Hyoid Rest (HRAN) 0.67 0.63 to 0.72 0.76 0.7 to 0.83 0.86 0.74 to 0.97
Pharyngeal Constriction Ratio (PCRN) 0.03 0.025 to 0.036 0.17 0.14 to 0.21 0.19 0.15 to 0.22