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. 2021 Aug 5;21:891. doi: 10.1186/s12885-021-08627-5

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© The Author(s) 2021

Open AccessThis 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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

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Fig. 2 — Long-term survival of of elderly M1b colon cancer patients according to marital status and insurance status, respectively. A, B the survival curves showed that the OS and CSS of the Non-married group were poorer than that of the Married group C, D the survival curves showed that the OS and CSS of the Uninsured group was poorer than that of the Insured group. C the Medicaid group had the similar OS with other subgroups. D the Medicaid group had the similar CSS with Insured group but had a better CSS than Uninsured group. OS, overall survival; CSS, cancer-specific survival