An Evolutionary Computation Approach for Optimizing Multilevel Data to Predict Patient Outcomes

Figure 4

Histogram summary of differences in predicted probabilities of the hierarchical approach relative to baseline models. (a, b, c) Baseline model with complaints only. (d, e, f) Baseline model with categorized complaints only for the inner (a, d), middle (b, e), and outer subgroups (c, f) of patients. Note that the y-axis displays the frequency (count) of patients on a logarithmic scale.