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. 2021 Sep 7;21:999. doi: 10.1186/s12885-021-08742-3

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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. 3 — Calibration plots comparing the similarity between the nomogram-predicted survival rates (represented by x-axis) and the actual survival rates (represented by y-axis). a 1-, 3-, and 5-year OS for high-grade cancers in the training dataset from the SEER database; b 1-, 3-, and 5-year OS for high-grade cancers in the validation dataset from the SEER database; c 1-, 3-, and 5-year OS for high-grade cancers in the validation dataset from the China multicenter dataset; d 1-, 3-, and 5-year OS for low-grade cancers in the training dataset from the SEER database; e 1-, 3-, and 5-year OS for high-grade cancers in the validation dataset from the SEER database. f 1-, 3-, 5-year OS for low-grade cancers in the validation dataset from the China multicenter database. OS: overall survival; SEER: the Surveillance Epidemiology, and End Results database