“…Each symptom was scored 0–3 according to its influence on patients' daily activities: 0, absent; 1, mild (symptoms presented but not interfere with daily activities); 2, moderate (symptoms presented and interfere with but not preclude daily activities); 3, severe (symptoms interfere with daily activities markedly enough to urge modification) . This questionnaire has been validated and used in our previous study . The patients who had heartburn and/or acid regurgitation as their main problem were classified as typical reflux symptom, and the patients who had upper abdominal pain or discomfort as their main problem, accompanying with any severity of heartburn and/or acid regurgitation, were classified as reflux‐like dyspepsia.…”