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Table 8 Within group volume comparisons for PTT and TBC

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

Group Variable 3 ml 5 ml 10 ml Paste Solid p-value
COPD PTT 1.22(1.26) 1.32(0.87) 1.25(0.67) 1.44(1.98) 1.56(2.07) .720
TBC 0.62(0.27) 0.95(0.79) 0.93(0.58) 0.92(0.45) 0.56(0.11) .004*
Control PTT 0.81(0.29) 1.04(0.60) 0.96(0.63) 0.80(0.25) 1.02(1.04) .291
TBC 0.55(0.30) 0.51(0.24) 0.66(0.39) 0.62(0.24) 0.52(0.12) .243
  1. Values expressed by mean and standard deviation; Friedman two-way analysis of variance by ranks.
  2. Legend: COPD – chronic obstructive pulmonary disorder; PTT – pharyngeal transit time; TBC - duration of tongue base contact with the posterior pharyngeal wall; * - significant results.