Figure 3
Events-free survival among all patients according RS groups. The survival follow-up was analyzed by the package survival version 3.1-845,46. The events include the local or metastatic relapse, other cancers occurred and death with a mean follow-up of 57 months. The RS are interpreted in three categories (low risk: RS < 18; intermediate risk: RS = 18–30; high risk: RS > 30). Statistical analysis were obtained by a Cox univariate test.
