Table 1.

Demographic and clinical characteristics of gastric cancer patients and control subjects

	Patients	%	Controls	%	t or χ2	P value
	N=326		N=326
Age, years
<60	183	56.13	178	54.60
≥60	143	43.87	148	45.40	0.15	0.69
Sex
Female	116	35.58	116	35.58
Male	210	64.42	210	64.42	0.00	1.00
Cancer history in the first relatives
No	302	92.64	323	99.08
Yes	24	7.36	3	0.92	17.04	<0.001
Alcohol drinking, n (%)
Never	181	55.52	207	63.50
Current or ever	145	44.48	119	36.50	4.30	0.04
Cigarette smokers, n (%)
Never	214	65.64	227	69.63
Current or ever	112	34.36	99	30.37	1.18	0.28
H.pylori infection
Negative	138	42.33	232	71.17
Positive	188	57.67	94	28.83	55.21	<0.001