Statistical analysis
INFILTRATION
Statistical analyses in this study were conducted by R software (version 3.6.3). The log-rank test was applied for the KM analysis. T test or Wilcoxon-test were used to compare the risk score between different clinical characteristic subgroups and proportion of immune infiltration score, TIICs, immune checkpoints and chemotactic factors between low-risk and high-risk groups. The mean standard deviation was utilized when the data were normally distributed and the independent t-test was used to compare the means of two independent groups. A p-value of < 0.05 was considered statistically significant. Graphpad Prism 8.0 was used to conduct the statistical analyses (GraphPad Software Inc., USA). *