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. 2019 Aug 7;23:276. doi: 10.1186/s13054-019-2553-z

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© The Author(s). 2019

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 — Receiver operating curve for IES-6 versus CAPS for DSM-IV Diagnosis of PTSD (posttraumatic stress disorder); area under the curve (95% confidence interval) = 0.93 (0.86, 1.00); Based on n = 60 (13% with PTSD at time of interview, 26% ever experiencing PTSD post-ARDS). Optimal cut-off score for IES-6 is 1.75