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. 2018 Feb 8;18:30. doi: 10.1186/s12890-018-0599-3

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© The Author(s). 2018

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. 1 — Transplant-free survival among NAC exposed and non-exposed individuals with UIP stratified by ANA antibody status. Among ANA seropositive individuals (a), NAC exposed individuals demonstrated improved survival compared to NAC non-exposed individuals (p_logrank = 0.02; HR 0.55, 95% CI 0.32–0.92). Among ANA seronegative individuals (b), survival did not differ between NAC exposed and non-exposed individuals (p_logrank p = 0.92; HR 1.03, 95% CI 0.56–1.87)