Table 3.

Statistical significance of variables on survivorships of 30 patients who presented without metastasis

Variable	Number of patients	Overall survival	Disease-free survival	Metastasis-free survival	Recurrence-free survival†
Age (< 30 years)	14	0.039	0.548	0.971	0.298
Male sex	17	0.06	0.024	0.088	0.424
Bone origin	15	0.602	0.224	0.43	0.505
Trunk	23	0.317	0.662	0.583	0.53
Inadequate margin*,†	12	0.924	0.875	0.635	0.753
No chemotherapy	14	0.961	0.908	0.748	0.388
No Radiotherapy	20	0.527	0.95	0.257	0.037

* Includes positive, marginal and unknown margins; ^†two cases with the primary tumor unresected are excluded.