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. 2022 Aug 1;2:935288. doi: 10.3389/fneph.2022.935288

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Copyright © 2022 Liu, Li, Du, Li and Chong

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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The adjusted hazard ratio using initial phosphate values as the design variable in non-CKD subgroup. The stepwise backward method corrected for confounding factors and removed the variables in turn: CCU (p = 0.8841), gender (p = 0.8806), smoking (p = 0.4945), COPD (p = 0.2086), and weight (p = 0.1044). CKD, chronic kidney diseases; COPD, chronic obstructive pulmonary disease; CVICU, Cardiac Vascular Intensive Care Unit; CCU, Coronary Care Unit; MICU, Medical Intensive Care Unit; MSICU, Medical/Surgical Intensive Care Unit; NICU, Neuro Intensive Care Unit; NSICU, Neuro Surgical Intensive Care Unit; SICU, Surgical Intensive Care Unit; TSICU, Trauma Surgical Intensive Care Unit; SOFA, sequential organ failure assessment.