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• W2135505005 abstract "Abstract Background The aim of this study was to evaluate the time trend of seropositivity of Helicobacter pylori ( H . pylori ) over the period of 13 years in an asymptomatic Korean population, and investigate associated risk factors. Methods This cross-sectional nationwide multicentre study surveyed anti- H . pylori IgG antibodies in 19,272 health check-up subjects (aged [greater than and equal to]16 years) in 2011. Risk factors for H . pylori infection were investigated using logistic regression. Seropositivity in asymptomatic subjects without H . pylori eradication was compared between the years 1998 and 2005. Birth cohort effects were also evaluated. Results After exclusion of subjects with a history of H . pylori eradication therapy (n = 3,712, 19.3%) and gastric symptoms (n = 4,764, 24.7%), the seroprevalence of H . pylori infection was 54.4% in 10,796 subjects. This was significantly lower than the seroprevalence of 59.6% in 2005 and that of 66.9% in 1998, and this decrease of seropositivity of H . pylori became widespread across all ages and in most areas of the country. This decreasing trend could be explained by cohort analysis. All younger birth cohorts had a lower seroprevalence of H . pylori than older birth cohorts at the same age. Decreased seroprevalence within the same birth cohorts also accounted for this phenomenon. Clinical risk factors of H . pylori infection were higher cholesterol level ([greater than and equal to] 240 mg/dl) (OR = 1.33; 95% CI = 1.14-1.54), male gender, older age, low income, and residence in a rural area. Conclusions A decreasing trend of H . pylori seroprevalence due to a birth cohort effect requires further studies on its related human host factors as well as socio-economic and hygienic factors. In addition, the relationship between H . pylori infection and high cholesterol level needs more investigation regarding underlying pathogenesis." @default.
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• W2135505005 date "2013-06-24" @default.
• W2135505005 modified "2023-10-06" @default.
• W2135505005 title "Prevalence and risk factors of Helicobacter pylori infection in Korea: Nationwide multicenter study over 13 years" @default.
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• W2135505005 doi "https://doi.org/10.1186/1471-230x-13-104" @default.
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