Should Aggressive Surgical Local Control Be Attempted in All Patients with Metastatic or Pelvic Ewing's Sarcoma?

Table 6

Univariate analyses of variables for Event free survival (EFS).

Univariate event free survival analysis^δ
Variable	5-year cumulative survival	𝑃 Value
Age (46 patients)		0.021^†
<14	0.78±.14
≥14	0.46±.09
Location (46 patients)		0.164
Appendicular	0.57±.10
Axial	0.45±.12
Pelvic location (46 patients)		0.796
No	0.54±.09
Yes	0.48±.16
Metastatic disease (42 patients)		0.150
No	0.61±.09
Yes	0.29±.15
Multicentric metastatic disease; (42 patients)		0.002^†
No	0.61±.09
Yes	0.00±.00
Bone or soft tissue (46 patients)		0.020^†
Bone	0.56±.08
Soft tissue	0.29±.17
Local radiation (43 patients)		0.675
No	0.54±0.09
Yes	0.40±0.16
Margins (35 patients)		0.337
Negative	0.60±.10
Positive	0.28±.21

^δ: Log Rank of Kaplan Meier EFS survival curves.
^†: Statistically significant factor.