Table 4.

Host and bacterial factors related to the presence of anti-H pylori antibodies (AHPA) in serum

	Anti-H pylori antibodies			P
	Positive (n = 82, %)	Negative (n = 70, %)	Absolute difference (95%CI)
Age≥60 (yr)	30 (37)	35 (50)	-0.13 (-0.29-0.02)	0.1
Sex (male)	59 (72)	41 (58)	0.13 (-0.02-0.29)	0.08
Blood type
A	25 (30)	21 (30)	0.00 (-0.14-0.15)	0.95
B	22 (27)	18 (26)	0.01 (-0.13-0.15)	0.88
O	31 (38)	27 (39)	-0.01 (-0.16-0.15)	0.92
AB	4 (5)	4 (6)	-0.01 (-0.08-0.06)	0.82
Smoking	31 (38)	25 (36)	0.02 (-0.14-0.18)	0.79
Daily alcohol use	13 (16)	6 (9)	0.07 (-0.03-0.18)	0.18
Daily coffee use	9 (11)	3 (4)	0.07 (-0.02-0.15)	0.13
Daily tea use	24 (29	17 (24)	0.05 (-0.09-0.19)	0.49