Figure 3.

A, B, Prediction model of hospitalization. Interpretation of model built with gradient boosting machine algorithm. A, SHAP summary plot for hospitalization prediction model ranking from the covariable with highest impact. The plot was colored according to the value of covariables, with pink indicating a higher value and blue indicating a lower value. B, Example of a predicted high-risk patient with interpretable additive effects of various variables. †Race: 0 = other, 1 = White, 2 = Black, and 3 = Asian. ‡Smoking status: 0 = other, 1 = never smoker, 2 = active smoker, and 3 = former smoker. Tx variables were 1 = present or 0 = absent. Lab variables were the value of the tests. CS = corticosteroid; FeNO = fractional exhaled nitric oxide; GERD = gastroesophageal reflux disease; HDiCS = high-dose inhaled corticosteroid; Hgb = hemoglobin; iCS = inhaled corticosteroid; LABA = long-acting inhaled β-agonist; LTRA = leukotriene receptor antagonist.