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Event free survival (EFS) classification and regression tree of colorectal cancer patients from Austria. Numbers under each node indicate the total number of cases in the subcategory/number of events and the percentage of patients with five-year EFS. Terminal nodes are bordered in bold, and the corresponding Kaplan–Meier curves are shown underneath. (A) Terminal node AT7; (B) Terminal node AT8; (C) Terminal node AT9; (D) Terminal node AT10.
