Comparison of Helicobacter pylori infection and gastric mucosal histological features of gastric ulcer patients with chronic gastritis patients

Table 3 Atrophy and intestinal metaplasia in different age groups of patients with gastric ulcer with and without H pylori infection (n, %).

	<31 yr	31-40 yr	41-50 yr	51-60 yr	61-70 yr	>70 yr
Cases	119	343	745	1098	940	594
Atrophy
H pylori-positive	34.8	54	65.2	66.3	67.8	75.1
H pylori-negative	4.7	14	36.4	46.5	51.9	57.6
Intestinal metaplasia
H pylori-positive	21.1	38	63.6	71	75.1	81
H pylori-negative	4.7	16	47.3	57.1	58.8	65.6