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. 2017 Mar 7;21:46. doi: 10.1186/s13054-017-1626-0

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© The Author(s). 2017

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. 2 — ROC analysis of three biomarkers and their combinations for AKI detection. Among 1084 adult critically ill patients, 326 (30.07%) were diagnosed with AKI (a total AKI). Of 326 patients with AKI, 102 patients were diagnosed with severe AKI (b severe AKI). AKI Acute kidney injury, ICU Intensive care unit, sCysC Serum cystatin C, uNAG Urinary N-acetyl-β-d-glucosaminidase, uACR Urinary albumin/creatinine ratio