Figure 2
From: Helicobacter pylori antibody patterns in Germany: a cross-sectional population study
Qualitative increase of H. pylori antibody responses with age in H. pylori seropositives (Hp+). Seroprevalence values in Hp+ sera are stratified by age group and gender. Stars above brackets encompassing seroprevalences to a certain H. pylori protein indicate significant seroprevalence increases with age within gender (all P for trend <0.05, Mantel-Haenszel χ2 test) or decrease in case of HpaA.