Polymorphism of CYPIA1 and GSTM1 genes associated with susceptibility of gastric cancer in Shandong Province of China

Table 2 Relative risk of stomach cancer in relation to observed factors

Factors	Controls	Cases	OR1	95%CI		OR2	95%CI
Chinese sauerkraut
None	53	95	1
Sometime	6	4	0.37	0.08	1.58	0.24	0.04	0.95
Often (2+/wk)	3	3	0.56	0.09	3.62	0.39	0.41	3.3
Mildew food
None	59	94	1
Sometime	2	5	1.57	0.2	12.11	1.5	0.22	10.14
Often (2+/mo)	1	3	1.88	0.17	48.13	1	0.07	14.69
Eat raw garlic/yr
<1 000	20	77	1
>1 000	42	25	0.15	0.07	0.33	0.15	0.06	0.33
CYPIA1 genotype
A/A	35	53	1
A/G	24	27	0.74	0.35	1.58	0.59	0.26	1.34
G/G	3	22	4.84	1.24	22.07	5.91	1.28	27.24
H pyloriinfection
-	26	13	1
+	36	89	4.64	2.15	11.51	4	1.65	9.71
Drinking white alcohol3
None	37	48	1
1-00	8	9	0.87	0.27	2.77	1.03	0.26	4.02
100+	17	45	2.04	0.95	4.39	1.11	0.41	2.99
Smoking4
None	42	46	1
<270	14	15	0.98	0.39	2.46	0.66	0.22	1.94
≥270	6	41	6.23	2.24	18.27	2.78	0.9	8.65
History of cancer family
None	59	88	1
Yes	3	14	3.13	0.79	14.38	2.98	0.69	12.82
GSTM1 genotype
+/+ or +/O	36	33	1
O/O	26	67	2.81	1.39	5.71	2.72	1.32	5.62

¹Non-adjusted OR,

²adjusted for age, sex, education, and occupation,

³drinking index = white alcohol/month×number of drinking years^,4smoking index = cigarette/day × number of smoking years.