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. 2026 Jan 21;12:1696945. doi: 10.3389/fmed.2025.1696945

Figure 2.

Boxplot showing the importance of various factors, ranked from lowest to highest. Colors indicate different categories: blue for shadow measures, red for diverse clinical measures, and green for COVID-19 related factors. Factors include shadowMin, Heart_Rate, and SOFA at each end. Importance is plotted on the y-axis.

Boruta analysis. The Boruta algorithm is utilized for feature selection. The x-axis denotes the names of the variables, while the y-axis represents the Z scores of each variable. The box plot illustrates the distribution of Z scores for each variable during the model computation process.