Figure 4.
Subgroup KM curves for the prognostic characteristic in upper and lower limb patients. (A) For age subgroup in upper limb patients; (B) for age subgroup in lower limb patients; (C) for tumor size subgroup in lower limb patients; (D) for lymph involvement subgroup in upper limb patients; (E) for lymph involvement subgroup in lower limb patients; (F) for metastasis subgroup in upper limb patients; (G) for metastasis subgroup in lower limb patients; (H) for metastasis subgroup in upper limb patients. KM, Kaplan-Meier; OS, overall survival.