Table 3.

Univariable Cox regression analysis of PFS.

Variable	Hazard Ratio (95% CI)	p-Value
Age (Years)	1.01 (0.98–1.03)	0.5888
Gender (Male vs. Female)	0.81 (0.42–1.57)	0.5357
STS extent (Locally advanced vs. Metastatic)	0.76 (0.36–1.560)	0.4659
ECOG PS (1–3 vs. 0)	2.69 (1.43–5.05)	0.0021
Lung metastasis (Yes vs. No)	0.97 (0.52–1.81)	0.9317
Prior surgery (Yes vs. No)	1.47 (0.76–2.83)	0.2508
Prior radiotherapy (Yes vs. No)	0.68 (0.34–1.38)	0.2888

CI—confidence interval; ECOG—Eastern Cooperative Oncology Group; PFS—progression-free survival; PS—Performance Status; STS—soft tissue sarcoma.