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. 2020 Aug 13;70(2):243–250. doi: 10.1136/gutjnl-2020-322200

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© Author(s) (or their employer(s)) 2021. Re-use permitted under CC BY-NC. No commercial re-use. See rights and permissions. Published by BMJ.

This is an open access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited, appropriate credit is given, any changes made indicated, and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/4.0/.

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Rates of mortality from gastric cancer between 1995 and 2018, correlated with the start of the mass eradication programme in 2004. The dash line indicates the predicted trend to 2025. The Gamma-Poisson regression model was internally validated by using data on the mortality rate of gastric cancer between 1995 and 2003 with the goodness-of-fit test (χ²=3.88; p=0.92). The magnitude of mortality reduction was determined by comparing the expected number of cases with the number observed during the chemoprevention period.