Figure 1.

Decision tree resulting from analyzing patients who should have not received PMRT treatment according to the guideline. In the leaves (gray boxes), there are two numbers in parentheses. The first number shows the number of cases who reached this leaf and the second shows the number of cases for whom the leaf class was not predicted to happen. The number outside the parentheses indicates the class for cases that reach this leaf. 1 means non-compliant cases and 0 means compliant cases with PMRT guideline.