Gastritis Stages in Monozygotic and Dizygotic Dyspeptic Twins

Table 1

Demographics and H. pylori status distinguishing monozygotic versus dizygotic twins.

Twin pairs	Monozygotic (14)			Dizygotic (15)			value
Gender of twins within a pair	MM; (3)	FF; (11)	MF; —	MM; (1)	FF; (9)	MF; (5)
Mean (median) age		40.3 (39.5)			38.6 (36)		0.623
Concordant Hp-positive status		5			5
Concordant Hp-negative status		4			5		0.893
Discordant Hp-negative status		5			5

MM: both twins of male gender; FF: both twins of female gender; MF: twin pair comprised of a male and a female twin.