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. 2021 Nov 1;11:21408. doi: 10.1038/s41598-021-00969-1

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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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Cumulative density function plots for incidence of recurrence by risk factor categories in gastric adenoma after endoscopic submucosal dissection with curative resection. Current follow-up endoscopy after endoscopic submucosal dissection (ESD) was performed uniformly at 3, 6, 12, 18, 24 months and annually thereafter for all patients. The cumulative density of recurrence over time was estimated from the Cox proportional hazard model with interval censoring with identified risk factors. Using this estimated cumulative density plot, the surveillance time point when recurrence could be detected was assessed to not exceed the tolerance risk limit of 7%, and the cumulative risk between surveillance intervals on average was less than or equal to this limit. It is advised to have the risk-group specific follow-up schedule based on the risk group of a patient.