Table 2.

Potential factors predictive of EFS and survival for the entire cohort of 36 patients with chest wall Ewing sarcoma.

		EFS±SE (%)		Survival±SE (%)
Factors	n	Year15	p-value	Year15	p-value
Age at Diagnosis
<=13 years	18	49.9±15.8	0.47	55.9±15.2	0.43
>13 years	18	62.8±14.5		75.4±13.2
Gender
Male	27	57.5±13.3	0.97	69.9±12.1	0.62
Female	9	51.9±18.0		50.8±17.8
Tumor Size
<8 cm	11	68.2±15.7	0.11	79.5±13.6	0.10
≥8 cm	25	52.7±14.8		59.7±14.3
Stage
Localized	22	67.8±11.6	0.06	79.5±10.0	0.06
Metastatic	14	37.7±29.8		43.6±32.8
Timing of Surgery
Delayed surgery	19	73.0±15.5	0.66	78.3±14.9	0.76
Upfront surgery	14	51.6±14.7		68.2±13.6
Surgical Margin
Positive	8	37.5±21.0	0.08	50.0±25.0	0.13
Negative (including CPR)	25	72.2±12.0		81.8±10.1