Table 2.

Characteristics of nocturnal acid breakthrough (NAB) monitored using intragastric pH monitoring following a single dose (20 mg) of rabeprazole, omeprazole and placebo in 18 obese volunteers. Values are medians and interquartiles (Q1-Q3)

NAB	Rabeprazole	Omeprazole	Placebo	p (OvsR)
Number	1 (1–2)	2 (1–3)	2 (1–3)	0.04
Minimal pH	0.7 (0.6-0.9)	0.5 (0.3-0.8)	0.4 (0.3-0.6)	0.53
Median pH	1.4 (1.2-1.5)	1.3 (0.8-1.5)	0.9 (0.7-1.1)	0.47
Duration (h)	5.1 (3.4-6.2)	6.5 (4.6-8.9)	9.2 (7.9-9.9)	0.11