Fig. 2.

Survival outcomes in the validation group according to the graded prognostic assessment for hepatocellular carcinoma patients with spinal metastasis (HCC-SM GPA). The risk groups were defined as follows: low-risk group, GPA score 0; intermediate-risk group, GPA scores 1 to 2; and high-risk group, GPA scores 3 to 4. Overall survival differed among all subgroups (p<0.001), between the low-risk and intermediate-risk groups (p=0.014), and between the intermediate-risk and high-risk groups (p=0.009). RT, radiotherapy.