Research of Helicobacter pylori infection in precancerous gastric lesions

Table 1 Relation between precancerous gastric lesions and age and sex

Variables	n	CSG		CAG		IM		DYS
		n	%	n	%	n	%	n	%
Sex
Male	314	96	30.6	142	45.2	43	13.7	33	10.5
Female	172	67	38.9	65	37.8	28	16.3	12	7
Age (yrs)
≤ 40	184	64	34.9	98	53.5	13	7.0a	9	4.6b
41-55	171	52	30.3	70	41.2	30	17.3	19	10.8
≥ 56	131	40	30.5	46	35.4	28	21.1a	17	13.0b

^aP < 0.05,

^bP < 0.05.

Table 2 Hp infection rate in precancerous gastric lesions

Variables	n	Hp (+)		Hp (-)
		n	%	n	%
CSG	163	39	23.9	124	76.1
CAS	207	88	42.5a	119	57.5
IM	71	54	76.1b	17	23.9
DYS	45	40	88.9c	5	11.1

^aP < 0.05, CAG vs CSG;

^bP < 0.01, IM vs CSG;

^cP < 0.01, DYS vs CSG.

Table 3 Hp infection distribution in precancerous gastric lesions by biopsy sites

Variables	n	ALC		AGC		A		BLC		BGC
		n	%	n	%	n	%	n	%	n	%
CSG	39	37	94.9	36	92.3	32	82.1	18	46.2	10	25.6
CAG	88	84	95.4	80	90.9	78	88.6	53	59.9	41	46.2
IM	54	49	90.7	46	85.2	40	74.1	34	62.7a	32	58.8a
DYS	40	36	90.0	33	82.5	30	75.0	28	70.0b	26	63.9b

ALC: Antral lesser curvature; AGC: Antral greater curvature; A: Angulus; BLC: Body, lesser curvature; BGC: Body, greater curvature.

^aP < 0.05, IM vs CSG;

^bP < 0.05, DYS vs CSG.