Results of investigations before and six months after surgery (n = 154)
| Before surgery | Six months after surgery | Difference (95% CI) | p value | |
|---|---|---|---|---|
| Median (IQR) heartburn score | 12 (8) | 0 (1) | 7.45 (6.00 to 9.00) | <0.0001 |
| Mean (SD) LES tone (mm Hg) | 7.71 (5.90) | 21.74 (10.84) | 14.06 (12.09 to 16.03) | <0.0001 |
| Mean (SD) 24 hour pH <4 (%) | 9.38 (10.99) | 1.22 (2.92) | 8.44 (6.49 to 10.45) | <0.0001 |
| Median (IQR) cough score | 8 (12) | 0 (3) | 4 (3.50 to 5.50) | <0.0001 |
| % patients with cough | 69 | 31 | <0.0001 |
LES = lower oesophageal sphincter.