Figure 3From: Prognostic significance of maximum primary tumor diameter in nasopharyngeal carcinoma Overall survival, failure-free survival and distant metastasis-free survival of 230 patients with T3-T4 stage nasopharyngeal carcinoma stratified by maximum primary tumor diameter. Hazard ratios (HRs) were calculated with the unadjusted Cox proportional hazards model; p values were calculated with the unadjusted log-rank test.Back to article page