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. 2021 Apr 29;11:9263. doi: 10.1038/s41598-021-88591-z

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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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Kaplan–Meier survival curves of COVID-19 patients stratified into low- and high-risk groups based on the mortality predictions in Fig. 1b. The estimated survival curves for the low- and high-risk groups are shown in blue and red, respectively, with shaded areas representing the 95% confidence interval. The P values were obtained by application of the log-rank test to the two survival curves. %S-WAL percentage of well-aerated lung parenchyma.