Table 7.
Determination of independent variables for Event Free Survival (EFS) with multivariate Cox regression analysis.
| Multivariate Cox Regression EFS analysis of covariates | |||
|---|---|---|---|
| Variable | HR | 95% CI | P value |
| Age | 0.638 | ||
| <14 | 1.00 | ||
| ≥14 | 1.56 | 0.26–8.56 | |
| Location | 0.165 | ||
| Appendicular | 1.00 | ||
| Axial | 2.22 | 0.72–6.85 | |
| Multicentric metastatic disease | 0.007† | ||
| No | 1.00 | ||
| Yes | 4.16 | 1.47–11.81 | |
| Bone or soft tissue | 0.014† | ||
| Bone | 1.00 | ||
| Soft tissue | 5.19 | 1.40–19.23 | |
| Local radiation | 0.397 | ||
| No | 1.00 | ||
| Yes | 1.55 | 0.56–4.27 | |
†: statistically significant independent variable on event free survival.