95% Confidence
Variable Hazard ratio Limits p
Tumor metastasis      
No (n=41) 1 1.453-5.824 0.0024
Yes (n=19) 2.762
Size of primary OS (cm)      
<8 (n=28) 1 1.620-5.219 0.02
≥8 (n=32) 2.364
Clinical stage      
Ⅰ/ⅡA (n=23) 1 1.372-6.837 0.013
ⅡB/Ⅲ (n=37) 2.765
Response to chemotherapy      
Poor (n=39) 1 0.87-4.65 0.04
Good (n=21) 1.28
XB130 expression      
Low (n=36) 1 1.47-5.36 0.01
High (n=24) 2.435
Table 2: Univariate analysis of prognostic factors in 60 cases of OS