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. 2021 Mar 15;11:6061. doi: 10.1038/s41598-021-85440-x

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© The Author(s) 2021

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Kaplan–Meier plot showing the mortality, by the denture use and chewing abilities, in the regular exercise group. The Kaplan–Meier curve is an estimator of the survival function. The Kaplan–Meier curve is the visual representation of this function and shows the probability of an event at a given time interval. The p value is for the log-rank test. (a) The cumulative mortality based on the denture use (b) The cumulative mortality based on the chewing ability of denture users (c) The cumulative mortality rate based on the chewing ability of denture non-users.