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Percentages of positive H.pylori antigen test in age groups. Participants were divided into less than 30 years old, 30~39 yrs, 40~49 yrs, 50~59 yrs and ≥60 yrs groups. The differences of H.pylori positive rates among groups were not statistically significant (54.63%, 58.75%, 67.29%, 57.99%, 58.42%, respectively; χ2=7.988, ν=4, P>0.05).
