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. 2019 Apr 8;23:112. doi: 10.1186/s13054-019-2411-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. 4 — Feature importance derived from XGBoost model. Abbreviations and annotations: creat.u, urinary creatinine; bun_max, maximum blood urea nitrogen; creatmax0d, maximum creatinine on the day of ICU admission; diasbp_min, minimum diastolic blood pressure; inr_max, maximum international normalized ratio; heartrate_max, maximum heart rate; sysbp_min, minimum systolic blood pressure; first_careunitCSRU, first care unit is cardiac surgery recovery unit; mech_vent, mechanical ventilation; ph.u, urinary pH; TSICU, trauma-neuro surgical ICU; vaso, vasopressor