Parameter | IPF# | Asthma# | p-value |
Mean±sd | Mean±sd | ||
Acid GER % | 87±34 | 68±47 | 0.014* |
Proximal GER % | 63±49 | 61±49 | 0.80 |
Distal GER % | 76±43 | 57±50 | 0.020* |
Proximal time % | 3.4±4.6 | 3.4±5.7 | 0.96 |
Distal time % | 9.6±7.8 | 7.4±8.3 | 0.12 |
Distal upright time % | 11.7±9.5 | 9.2±10.7 | 0.16 |
Distal supine time % | 6.1±10.1 | 5.9±12.8 | 0.94 |
DeMeester score | 35.6±28.4 | 30.4±34 | 0.36 |
GER: gastro-oesophageal reflux; IPF: idiopathic pulmonary fibrosis. #: subjects not on proton pump inhibitor therapy at the time of their oesophageal pH probe study (IPF patients: n = 46, except for distal upright time, distal supine time and DeMeester score where n = 44; asthma patients: n = 133, except for DeMeester score where n = 131). *: p<0.05.