Figure 2

Actuarial local (primary site) recurrence-free rate of patients with advanced squamous cell carcinoma of the oral cavity by Kaplan–Meier method. (A) Actuarial local (primary site) recurrence-free rate of all patients. A solid line: local control rate curve. A broken line: 95% CI. (B) Actuarial local (primary site) recurrence-free rate according to the T stage. A solid line: T2+T3 cases (n=83). A broken line: T4 cases (n=51). P=0.00531.