Figure 1

H. pylori seroprevalence and antigen-specific seropositivity to 15 different H. pylori proteins in the German population. Seroprevalence values (%) are given stratified by age group and gender. Stars above columns indicate significant seroprevalence differences between the corresponding age group and the previous age group within gender (P < 0.05, Fisher’s exact test). H. pylori seroprevalence and all antigen-specific prevalences increased with age (P for trend < 0.0001, Mantel-Haenszel χ² test) stronger in males than females.