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. 2023 Jan 26;6:e39650. doi: 10.2196/39650

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©Rodney Allanigue Gabriel, Bhavya Harjai, Sierra Simpson, Austin Liu Du, Jeffrey Logan Tully, Olivier George, Ruth Waterman. Originally published in JMIR Perioperative Medicine (http://periop.jmir.org), 26.01.2023.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work, first published in JMIR Perioperative Medicine, is properly cited. The complete bibliographic information, a link to the original publication on http://periop.jmir.org, as well as this copyright and license information must be included.

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Feature importance from the Extreme Gradient Boosting based on SHAP (Shapley Additive Explanations) values. (A) SHAP analysis for each of the 10 folds; (B) a heat map of the frequency of ranks for each feature per k-fold.