Fig. 3
From: Influence of hypertension and other risk factors on the onset of sublingual varices
Best classification tree obtained with the CART algorithm. NH non-hypertensive subjects, NDH new diagnosed hypertensive subjects, CH compensated hypertensive subjects, RH resistant hypertensive subjects. Each node is the graphical representation of a set of “if…then” rules thus, for example, if Age is more than 69 years old and if clinical evaluation is NH or NDH and if Age is more than 86 years old then the subject is classified as subject without SV