Table 1.

Characteristics of H pylori-seropositive and -seronegative subjects

	H pylori-seropositive (n = 237)		H pylori-seronegative (n = 173)		P-value
	n (%)		n (%)
Gender					0.645
Male	234	98.7	171	98.8
Female	3	1.3	2	1.2
Age (yr)					< 0.001
< 45	30	12.7	63	36.4
45-49	62	26.2	53	30.6
50-54	85	35.9	43	24.9
≥ 55	60	25.3	14	8.1
Smoking					0.281
Never	59	24.9	32	18.5
Former	76	32.1	57	32.9
Current	102	43.0	84	48.6
Drinking					0.023
Never or rarely	35	14.8	43	24.9
1-5 times/wk	131	55.3	91	52.6
6-7 times/wk	71	30.0	39	22.5