Gastro-oesophageal reflux variables according to body posture
| Balanced meal | High fat meal | |
| Time at pH<4 (%) | ||
| Recumbent controls | 2.6 (0.9) | 2.5 (1.8) |
| Sitting controls | 0.1 (0.1) | 0.1 (0.1) |
| Recumbent patients | 19.5 (6.5) | 16.5 (7.5) |
| Sitting patients | 8.6 (2.9) | 6.3 (2.4) |
| Rate of reflux episodes (no/h) | ||
| Recumbent controls | 1.0 (0.4) | 1.1 (0.7) |
| Sitting controls | 0.4 (0.2) | 0.6 (0.4) |
| Recumbent patients | 4.8 (1.7) | 5.2 (1.9) |
| Sitting patients | 3.9 (1.1) | 2.4 (0.7) |
Data are expressed as mean (SEM).