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Table 6 Spearman correlation coefficient for 5 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 .569 .335   .096 .025  
p-value .009* .149   .686 .916  
TBC r .088 .150 .118 .360 .551 .473
p-value .712 .529 .620 .120 .012* .035*
  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.