Table 2.

Univariate survival analysis of radiation-associated angiosarcomas

Variables	OS	DSS	LRFS	DMFS
	Univariate Cox proportional model P value
Age (continuous variable)	0.047	0.021	0.027	0.003
Tumor size (continuous variable)	0.012	0.028	0.037	0.049
	Log-rank P value
Margin status a : positive vs. negative	0.002	0.003	<0.001	0.911
MYC amplification: amplified vs. non-amplified	0.029	0.069	0.372	0.117
Chemotherapy: no chemotherapy vs. adjuvant chemotherapy vs. neoadjuvant chemotherapy	0.819	0.805	0.422	0.266
Adjuvant radiation: yes vs. no	0.352	0.871	0.234	0.269

OS=overall survival; DSS= disease specific survival; LRFS=local recurrence free survival; DMFS=distant metastasis free survival;

^aonly microscopic margin status included