The prediction probabilities of holdout testing samples by three random-forest (RF) based binary classifiers. The classifier 1 is for the control and TBPH_LOW groups; the classifier 2 for the control and TBPH_HIGH groups; the classifier 2 for the control and the combined TBPH_LOW and TBPH_HIGH groups. Samples ES1-ES16 are of the control group; ES17-ES32 are of TBPH_LOW, and ES33-ES40 are of TBPH_HIH.