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. Author manuscript; available in PMC: 2020 Feb 1.
Published in final edited form as: Dysphagia. 2018 Jul 23;34(1):129–137. doi: 10.1007/s00455-018-9924-5

Table 4.

Pearson correlations between pharyngeal lumen volume and each dependent variable. [MPCAn = maximum pharyngeal constriction area normalized, C2-4 = % of the distance of the second to fourth cervical vertebrae, NRRS = normalized residue ratio scale]

Correlation with Pharyngeal Volume p
Pharyngeal Constriction (MPCAn) 0.29 <0.001
Pharyngeal Shortening (%C2-4) 0.08 0.115
Vallecular Residue (NRRSv) 0.24 <0.001
Pyriform Sinus Residue (NRRSp) 0.16 0.002