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Table 4 Between-group comparison for valleculae residue

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

   None (n) Mild (n) Moderate (n) Severe (n) p-value
3 ml liquid COPD 12 7 1 - .322
Control 15 3 2 -
5 ml liquid COPD 12 4 3 1 .695
Control 11 6 3 -
10 ml liquid COPD 12 7 - 1 .249
Control 11 6 3 -
Paste COPD 13 6 1 - .809
Control 13 5 2 -
Solid COPD 16 3 1 - .766
Control 16 2 2 -
  1. Legend: COPD – chronic obstructive pulmonary disorder; n – number of individuals.