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Table 2 Prevalence of at least monthly symptoms of heartburn or regurgitation (any frequency or severity).

From: A population-based survey of the epidemiology of symptom-defined gastroesophageal reflux disease: the Systematic Investigation of Gastrointestinal Diseases in China

Symptom Prevalence (%)
Heartburn or regurgitation 12.7
Regurgitation 10.8
   Acid taste in the mouth 8.7
   Unpleasant movement of material upwards from the stomach 5.3
Heartburn 4.0
   Burning behind the breastbone 2.4
   Pain behind the breastbone 2.8