Figure 2

Survival rates of 188 nasopharyngeal carcinoma patients. (A) Overall survival, (B) failure-free survival, (C) distant metastasis-free survival, and (D) local relapse–free survival rates of patients with complete response of primary tumor (CRPT), partial response of primary tumor (PRPT), and stable disease of primary tumor (SDPT) at the end of radiotherapy. Hazard ratios (HR) were calculated with the unadjusted Cox proportional hazards model; P-values were calculated with the unadjusted log-rank test. 95% CI, 95% confidence interval.