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Table 5 Spearman correlation coefficient for 3 ml liquid

From: Swallowing transit times and valleculae residue in stable chronic obstructive pulmonary disease

   COPD Control
   VEF1 BMI PTT VEF1 BMI PTT
PTT r .201 .760   .045 .022  
p-value .395 .751   .850 .928  
TBC r .359 .185 .311 .080 .365 .582
p-value .120 .429 .183 .736 .113 .007*
  1. Legend: COPD – chronic obstructive pulmonary disorder; FEV1 - forced expiratory volume during the first second; BMI – body mass index; PTT – pharyngeal transit time; TBC - duration of tongue base contact with the posterior pharyngeal wall; * - significant results.