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. 2022 Feb 25;10:816153. doi: 10.3389/fcell.2022.816153

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Copyright © 2022 Guo, Liu, Yu, Liu, Ma, Ge, Xing, Lu, Weng, Wang, Liu, Hua, Han and Li.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Evaluation of the PPSM model effectiveness in three cohorts. (A–C) Multivariate COX regression analysis of the risk score in the three cohorts: TCGA (A), GSE62254 (B), and GSE15458 (C). (D–F) ROC analysis for the three cohorts: TCGA (D), GSE62254 (E), and GSE15458 (F). (G–I) Calibration plots were used to compare the actual probabilities and the predicted probabilities of OS in the three cohorts: TCGA (G), GSE62254 (H), and GSE15458 (I).