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

Table 2 Atrophy and intestinal metaplasia in different age groups of patients with chronic gastritis with and without H pylori infection (n, %).

	<31 yr	31-40 yr	41-50 yr	51-60 yr	61-70 yr	>70 yr
Cases	423	515	647	929	885	703
Atrophy
H pylori-positive	25.4	30	54	56.4	63.6	66.3
H pylori-negative	2.5	5.6	8.7	16.1	27.2	34.5
Intestinal metaplasia
H pylori-positive	15.9	20	41.5	53.9	62.8	68.3
H pylori-negative	1.8	4.5	9.9	21.7	34.9	43.1