Fig. 7
Meta-analysis of disease-free survival (DFS) after E75 vaccine injection: STATA 15.0 was used to analyze the nine clinical studies. The relative risk (RR) value and the 95% confidence interval (CI) were used to describe the effect of the vaccine on vaccinated and control patients. Heterogeneity was tested by the Q measurement (P = 0.003) and the I2 measurement (I2 = 69.5%). A meta-analysis of the disease-free survival of 962 patients in the vaccinated group and 852 patients in the control group showed that the disease-free survival rate was different between the two groups (P < 0.05)