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Table 3 Between-group comparison for transit times (in seconds)

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

   PTT mean(SD) U p-value TBC mean(SD) U p-value
3 ml Liquid COPD 1.22(1.26) 135.5 .080 .62(.27) 148.5 .162
Control .81(.29) .55(.30)
5 ml Liquid COPD 1.32(.87) 136.0 .083 .95(.79) 94.0 .004*
Control 1.04(.60) .51(.24)
10 ml Liquid COPD 1.25(.67) 82.5 .001* .93(.58) 134.0 .070
Control .96(.63) .66(.39)
Paste COPD 1.44(1.98) 107.5 .012* .92(.45) 119.0 .028*
Control .80(.25) .62(.24)
Solid COPD 1.56(2.07) 141.0 .110 .56(.11) 153.0 .201
Control 1.02(1.04) .52(.12)
  1. Legend: COPD – chronic obstructive pulmonary disorder; SD – standard deviation; PTT – pharyngeal transit time; TBC – duration of tongue base contact with the posterior pharyngeal wall; * - significant results.