Fig. 3

Performance of the clinical risk stratification COVID-19 severity assessment (COSA) score and machine learning models. Performance on training data as measured by area under the receiver operating characteristic. DTI (CART): decision tree induction with classification and regression trees. The lower and upper hinges of the box correspond to interquartile ranges (IQR). The upper and lower whisker extends from the hinge to the largest and smallest value, respectively, no further than 1.5 * IQR from the hinge. Data beyond the end of the whiskers are plotted individually