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. 2020 Jan 8;21:10. doi: 10.1186/s12931-020-1273-x

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© The Author(s). 2020

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. 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.

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Fig. 3 — All-cause mortality and respiratory failure in progressive and non-progressive cavity groups. Panel A shows the Kaplan–Meier survival curves of all-cause mortality. Panel B shows the Kaplan–Meier survival curves of respiratory failure. P values from the log-rank test were used to examine differences in the Kaplan–Meier curves