| Symptom | Frequency | Prevalence |
| Heartburn | >1/month | 24% |
| >1/week | 13% | |
| Upper abdominal pain | ⩾1/year | 26% |
| >6/year | 16% | |
| Acid regurgitation | >1/month | 11% |
| >1/week | 7% | |
| Upper abdominal pain lasting >2 hours | 4% | |
| Nausea | >1/month | 8% |
| >1/week | 3% | |
| Vomiting | >1/month | 2% |
| Anorexia | 4% | |
| Weight loss >3 kg | 3% |
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