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

Table 2

Helicobacter pylori status and MCV, folate, and B12 levels.

	H. pylori-positive (n = 213), mean ± SD	H. pylori-negative (n = 76), mean ± SD	value
MCV (fl)	86.1 ± 6.0	84.9 ± 7.9	^a0.188
Folate (ng/dl)	8.3 ± 3.2	10.9 ± 4.0	^a0.001
B 12 (median) (min–max)	276.5 ± 134.0 (256.0)	338.4 ± 160.8 (299.5)	^d0.003

^aStudent’s t-test. ^dMann–Whitney U test. . . Min: minimum; Max: maximum; SD: standard deviation; B12: pg/ml; MCV: mean corpuscular volume.