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. 2021 Oct 4;8:693959. doi: 10.3389/fmed.2021.693959

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Copyright © 2021 Li, Wang, Zhang, Fan, Li, Zhou, Yang, Shi, Li, Zhang, Chen and Ren.

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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Independent prognostic analysis of clinical parameters and risk score. The univariate (A) and multivariate (B) Cox regression analysis of the associations between the risk score, the clinical parameters and OS of IPF patients in the training cohort. The univariate (C) and multivariate (D) Cox regression analysis of the associations between the risk score, clinical parameters and OS of IPF patients in the testing cohort. IPF, idiopathic pulmonary fibrosis; OS, overall survival.