Table 5. Prognostic values (p value and Hazard Ratios when significant p-value) of classical prognostic factors derived from initial staging and of metrics derived from initial FDG-PET, on multivariate analysis.
| EWS | OST | |||||||
|---|---|---|---|---|---|---|---|---|
| Parameter | PFS | OS | PFS | OS | ||||
| p-value | Hazard Ratio | p-value | Hazard Ratio | p-value | Hazard Ratio | p-value | Hazard Ratio | |
| Bone Metastasis | 0.0002 | 29.698 | NRM | - | - | - | - | - |
| Lung Metastasis | 0.0016 | 18.78 | - | - | 0.031 | 5.308 | NRM | - |
| Histologicsubtypes | - | - | - | - | 0.041 | 0.301 | NRM | - |
| Elongation | - | - | NRM | - | 0.019 | 5.583 | 0.0062 | 7.113 |
Only significant or nearly significant indices on univariate analysis were included on the multivariate analysis. Significant p-value in bold.
For OST, histologic subtypes compares Osteoblastic vs Chondroblastic/Telangiectatic subtypes.
EWS: Ewing sarcoma; OST: Osteosarcoma; NRM: not retained in model.