The Relation of Cytotoxin-Associated Gene-A Seropositivity with Vitamin B12 Deficiency in Helicobacter pylori-Positive Patients

Table 4

B12 levels in H. pylori (+) patients with and without CagA positivity.

	n (%)	B12 level (mean ± SD) in patients with CagA (+) n = 122	B12 level (mean ± SD) in patients with CagA (−) n = 91	value
Total	213 (100%)	245.5 ± 112.5	301.6 ± 146.1	^a0.003
Lymphocyte (+)	181 (85.0%)	243.9 ± 114.8	299.8 ± 154.1	^a0.006
Activation (+)	133 (62.4%)	244.2 ± 114.6	304.0 ± 153.4	^a0.012
Metaplasia (+)	33 (15.5%)	222.9 ± 109.4	273.3 ± 135.0	^a0.109
Atrophy (+)	33 (15.5%)	168.4 ± 60.5	285.6 ± 134.3	^a0.001
Lymphoid follicle(+)	61 (28.6%)	234.9 ± 135.5	284.9 ± 127.0	^a0.033

^aStudent’s t-test. B12: pg/ml. . . SD: standard deviation.