Table 2.

Frequency distribution of symptoms from six items included in GerdQ among 1072 participants

	Patient no. (%)
Symptoms	0 day (never)	1 day (mild)	2–3 days (moderate)	4–7 days (severe)
Heartburn	789 (73.6)	90 (8.4)	113 (10.5)	80 (7.5)
Acid regurgitation	878 (81.9)	66 (6.2)	71 (6.6)	57 (5.3)
Stomach pain or discomfort	26 (2.4)	61 (5.7)	69 (6.4)	916 (85.5)
Nausea	15 (1.4)	46 (4.3)	61 (5.7)	950 (88.6)
Night sleep disturbance	963 (89.8)	53 (4.9)	42 (3.9)	14 (1.4)
Additional medication	973 (90.8)	30 (2.8)	41 (3.8)	28 (2.6)