Figure 1: Kaplan-Meier estimates for PFS for patients in the two groups. The PFS of transfusion of cytokine-induced killer cells combined with chemotherapy and XIAOJI decoction. The blue bar represents treatment group which received chemotherapy plus XIAOJI decoction and CIK cell transfusion. The green bar represents control group which received chemotherapy plus XIAOJI decoction. The result showed that significant longer of PFS were achieved in treatment group compared with control group (9.1 months vs. 7.2 months, HR 0.323, 95% CI [0.157, 0.663, P=0.002]. This indicated that CIK transfusion prolonged the PFS of patients with advanced stage NSCLC.