Figure 2: (a) Although t-tests show high significance in many first-order terms, the dotplots above underscore that a significant difference in the WBC counts on day 28 between high- and low-risk groups—resulting in a highly significant value—is not sufficient to partition the risk groups. (b) Examining the entire cohort, it can be seen that slicing the populations by neither line A (10 patients misclassified), line B (8 patients misclassified), nor line C (7 patients misclassified) will provide good results.. Clearly, we need a more complex model to stratify this population.