The Prevalence of Helicobacter pylori Infection Decreases with Older Age in Atrophic Gastritis

Table 1

The clinical and pathological characteristics of 3969 cases of atrophic gastritis according to age group.

Age (years)	Cases (N)	Gender		Gastric atrophy			Intestinal metaplasia				Dysplasia				H. pylori infection		Inflammatory activity
		Male	Female	Mild	Moderate	Severe	None	Mild	Moderate	Severe	None	Mild	Moderate	Severe	Negative	Positive	Negative	Positive
≤29	28	15	13	20	5	3	8	10	6	4	27	1	0	0	18	10	16	12
30–39	129	75	54	72	52	5	20	35	55	19	128	1	0	0	85	44	77	52
40–49	605	333	272	380	212	13	104	158	270	73	585	19	1	0	465	140	407	198
50–59	1296	637	659	747	507	42	224	331	529	212	1259	32	5	0	991	305	864	432
60–69	1106	567	539	634	417	55	142	306	475	183	1067	29	8	2	887	219	794	312
70–79	689	350	339	388	269	32	107	192	271	119	657	26	3	3	593	96	519	170
≥80	116	74	42	50	52	14	17	25	46	28	112	3	1	0	96	20	79	37
Total	3969	2051	1918	2291	1514	164	622	1057	1652	638	3835	111	18	5	3135	834	2756	1213
P		0.134		0.000			0.048			0.468					0.000		0.000