| Lower oesophageal sphincter | |
| Pressure mmHg | 24.6±14.2 |
| Length cm | 2.8±0.7 |
| Mean distal peristaltic amplitude mmHg | 64.3±20.4 |
| Peristalsis | |
| Normal | 14 |
| Abnormal | 2# |
| Reflux indices | |
| Acid exposure % | 12.6±7.3 |
| DeMeester score | 49.5±27.9 |
| Oesophageal volume exposure % | 1.3±0.4 |
| Total reflux events | 66±27 |
| Proximal reflux events | 23±15 |
Data are presented as mean±sd or n. #: nonspecific dysmotility and diffuse oesophageal spasm.