Figure 5. Box-whisker plot representing the values of AUC in the training set.

In the boxplot, from bottom to top, they are Q1-1.5*IQR, Q1, median, Q3, and Q3+1.5*Q3 where Q1 is first quartile (25^th percentile), Q3 is the third quartile (75^th percentile), and IQR is the interquartile (namely, Q3-Q1). In A the analysis is made with a single variable, with all the possible combination of two (n = 17,578) and three variables (n = 1,089,836). In B the analysis is performed by adding one new variable (gene, microRNA or protein) to the previous top combinations.