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| Variables | Sleep quality impairment, n (%) | p value | |||
| No | Moderately impaired | Severely impaired | Very severely impaired | ||
| Heartburn | 4 (3.67) | 37 (33.94) | 50 (45.87) | 18 (16.51) | < 0.001 |
| Regurgitation | 5 (6.10) | 24 (29.27) | 38 (46.34) | 15 (18.29) | < 0.001 |
