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. 2024 Jul 16;3(8):101116. doi: 10.1016/j.jacadv.2024.101116

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© 2024 The Authors

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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Shapley Additive Explanation (SHAP) Value Plot

Predictors are ranked on the y-axis from top to bottom in descending order of their importance. The x-axis represents SHAP values. The plot is red, where the value of the feature is high, and blue, where the value of the feature is low. Binary variables are encoded as Low for No, High for Yes. Categorical variables are encoded with higher values being those expected to positively influence Tier-1 outcome. BMI = body mass index; BSA = body surface area; KCCQ-12 = Kansas City Cardiomyopathy Questionnaire-12; STS = Society of Thoracic Surgeons.