Table 4.

 Dynamic characteristics of acid reflux in gastro-oesophageal reflux disease patients

	Reflux episodes (n)				Duration (minutes)†
	Pretreatment		Post treatment		Pretreatment		Post treatment
Distal oesophagus	469		564		1.6 (1.3–1.8)		1.2 (0.9–1.5)

	Upright	Supine	Upright	Supine	Upright	Supine	Upright	Supine
†Values are mean (95% confidence interval).
***p<0.001 versus pretreatment.
	312	157	342	222	1.5 (1.2–1.8)	1.8 (1.3–2.2)	1.1 (0.8–1.6)	1.1 (0.8–1.5)
Middle oesophagus	175		54		2.3 (2.0–2.8)		1.6 (0.8–2.3)***
	106	69	49	5	2.3 (1.8–2.9)	2.5 (1.9–3.1)	1.6 (0.7–2.4)	1.2 (0.4–2.4)
Proximal oesophagus	76		32		1.9 (1.3–2.5)		0.9 (0.6–1.1)***
	41	35	29	3	1.4 (0.8–1.9)	2.5 (1.4–3.6)	0.8 (0.5–1.1)	0.7 (0.4–1.9)