Figure 2From: Prevalence and risk factors of Helicobacter pylori infection in Korea: Nationwide multicenter study over 13 years Trends of seroprevalence of H. pylori infection in asymptomatic subjects without a history of H. pylori eradication in 1998[10], 2005[9], and 2011. (* p < 0.05) Seroprevalence by sex (Panel A), by geographic area (Panel B) and by age (Panel B).Back to article page