Helicobacter pylori infection and risk of gastric cancer in Changle County, Fujian Province, China

Table 1 Demographic characteristics as well as Helicobacter pylori infection in patients and controls

	Patients		Controls		P value
	n	%	n	%
Age (years)
30-39	4	(4.0)	5	(5.0)
40-49	18	(17.8)	18	(17.8)
50-59	25	(24.8)	22	(21.8)
60-69	34	(33.7)	38	(37.6)
≥ 70	20	(19.8)	18	(17.8)	0.9597
Gender
Males	87	(86.1)	87	(86.1)
Females	14	(13.9)	14	(13.9)	1.0000
Education
College	1	(1.0)	1	(1.0)
High school	17	(16.8)	68	(67.3)
Elementary school	65	(64.4)	24	(23.8)
Illiterate	18	(17.8)	8	(7.9)	0.0000
H. pylori
Positive	60	(59.4)	68	(68.0)
Negative	41	(40.6)	32	(32.0)	0.2064

Table 2 Helicobacter pylori infection in study subjects

Age group(years)	Men			Women
	n	Hp (+)	%	n	Hp (+)	%
30-39	7	7	(100.0)	2	2	(100.0)
40-49	29	18	(62.1)	7	5	(71.4)
50-59	46	28	(60.9)	1	1	(100.0)
60-69	58	39	(67.2)	13	6	(46.2)
≥ 70	33	18	(54.6)	5	4	(80.0)
Total	173	110	(63.6)	28	18	(64.3)

χ² = 5.68, P = 0.2241; χ² = 4.22, P = 0.3769

Table 3 Helicobacter pylori infection and gastric cancer

Controls	Patients		Pairs
	Hp (+)	Hp (-)
Hp (+)	39	29	68
Hp (-)	20	12	3
Pairs	59	41	100

χ² = 1.31, P = 0.25

Table 4 Helicobacter pylori infection in gastric cancer cases

Gastric cancer	n	H. pylori infection
		n	%
Cardiac	25	14	56.0
Non-cardiac	76	46	60.5

χ² = 0.04, P = 0.8395

Table 5 The results of multivariate Conditional Logistic Regression analysis

Factors	β	sx-	OR	95%CI
Low educational level	1.3517	0.4487	3.864	1.604-9.311
Low consumption of vegetables	1.5944	0.6580	4.925	1.356-17.885
High intake of fish sauce	2.3596	0.6748	10.587	2.821-39.738
Unscheduled meals	1.4479	0.5508	4.254	1.445-12.552
H. pylori infection	1.2392	0.6852	3.453	0.901-13.224