Results by elevation
| Variable | Horizontal | Elevated 30° | Difference (SE) | t | p | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mean | SEM | Mean | SEM | |||||||||
| Mean time (min) | 274.7 | 5.7 | 281.7 | 5.5 | — | |||||||
| Reflux index (%) | 10.7 | 1.0 | 10.1 | 1.3 | 0.6 (1.15) | 0.52 | 0.61 | |||||
| No of episodes/mean time | 6.3 | 0.5 | 5.1 | 0.5 | 1.2 (0.69) | 1.75 | 0.09 | |||||
| No of episodes >5 min/mean time | 1.3 | 0.1 | 1.0 | 0.1 | 0.3 (0.14) | 184 | 0.08 | |||||
| Longest episode (min) | 16.5 | 1.9 | 17.1 | 2.6 | 0.7 (2.11) | −0.32 | 0.75 | |||||
Values other than those for t test have been rounded to a single decimal place.