Extensive Atrophic Gastritis Increases Intraduodenal Hydrogen Gas

Table 2

Intragastric and intraduodenal hydrogen levels in relation to the grade of atrophic gastritis.

	Closed type	O-1	O-2	O-3
Number of patients	200	66	101	280
Age (mean ±SD)	55.3±13.9	58.1±13.6	59.1±12.5	66.1±9.8
Male/female	60/140	22/44	39/62	90/190
Stomach (ppm)	10.5±17.3^*	7.4±10.2	8.0±12.0	7.5±17.0
P values v.s.^*	^*	.085	.105	.031
Duodenum (ppm)	7.1±12.7	4.4±8.2	8.1±18.5	21.5±86.1
P values v.s.^**	.009	.055	.061	^**