Figure 5.

Heat map of the variables selected and their importance quartile for each variable selection method in the adult clinical deterioration cohort.

The color of each cell represents the importance of each variable (in the vertical axis) as ranked by each variable selection method (in the horizontal axis). The importance ranking is categorized in quartiles, with darker cells denoting higher importance quartiles. White cells represent variables not selected by a particular variable selection method. Notably, only one variable, Respiratory Rate, was ranked by all methods in the top two quartiles of importance, and no variable was excluded by all methods. AIC, backward selection using Akaike Information Criterion; p-value, backward selection using p-value <0.05; EN, Elastic Net.