by multiple regression analysis it was found that the pressure in the distal oesophageal high pressure zone , the presence of a hiatal hernia , the intra-abdominal length of the high pressure zone , the amplitude of the contraction waves in the distal oesophagus and age all significantly participated in the determination of the amount of gastro-oesophageal reflux .
C0014876
oesophagus
C0017168
gastro-oesophageal reflux