Fig. 1From: Prognostic value of systemic inflammation response index in nasopharyngeal carcinoma with negative Epstein-Barr virus DNAX-tile analysis of survival data of NPC patients. a The optimal cut-off value for the SII was 655.54 (chi square = 18.922, p < 0.001); b The optimal cut-off value for the SIRI was 1.12 (chi square = 23.425, p < 0.001)Back to article page