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Table 3 Questions and scores used for evaluating frequency, intensity, and severity of GERD related symptoms

From: Prospective Acid Reflux Study of Iran (PARSI): Methodology and study design

Symptoms Frequency Intensity Severity
Heartburn, Acid regurgitation, Non Cardiac Chest Pain, Chronic Interscapular Pain None (0) With specific food (1) Less than weekly (2) 1–3 times per week (3) Almost every day (4) Several times a day (2×) Do not feel it if don't think about it (2) Feel it, but not interfering with work and/or daily life (3) Interfering with work and/or daily life (4)
Halitosis, Water Brash, Nausea, Hoarseness, Globus, Bitter Mouth None (0)   Less than weekly (1) 1–3 times per week (2) Almost every day (3) Several times a day (2×) Do not feel it if don't think about it (2) Feel it, but not interfering with work and/or daily life (3) Interfering with work and/or daily life (4)
Dysphagia, Odynophagia None (0) With specific food or condition (1) Less than weekly (2) 1–3 times per week (3) Almost every day (4)   Relieves spontaneously (2) Relieved with drinking water(3) Only partially relieved by ingesting large amounts of water (4)
Chronic Cough, Sore throat and mouth None (0)   Occasionally (1) Most days (2) Almost every day (3) Almost all day long (2×) Not interfering with work and/or daily life (2) Interfering with work and/or daily life (3)  
Anorexia None (0)   Less than weekly(1) 1–3 times per week (2) Almost every day (3) Several times a day (2×) Although present but I take almost normal amount of food (2) I have cut my food intake (3) I am almost unable to take any food (4)
Belching None (0) With specific food or condition (1) Less than weekly (2) 1–3 times per week (3) Almost every day (4) Almost all day long (2×) Not interfering with work and/or daily life (2) Interfering with work and/or daily life (3)