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. 2018 Dec 8;18:185. doi: 10.1186/s12871-018-0645-y

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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. 3 — C-statistics of the final model and the temporal validation using the unified definition. Figure 3a. The predictive value of the final model, including previous cardiothoracic surgery, preoperative dopamine use, preoperative bilirubin level and creatinine clearance, calculated as area under the curve (AUC = 0.80, 95% CI 0.71–0.89, P < 0.01). Figure 3b. The predictive value of the temporal validation 0.74 (95% CI 0.61–0.87, p < 0.01)