Table 3.

Cox hazard regression analysis of osteosarcoma patients.

Variables		HR	95% CI	P value
Metastasis	Negative	Reference
	Positive	2.50	1.17–5.35	0.018*
Chemotherapy response	Good	Reference
	Poor	3.55	1.46–8.64	0.005*
ECT2 protein level	Low	Reference
	High	2.26	1.05–4.88	0.037*

ECT2 – epithelial cell transforming sequence 2; HR – hazard ration; CI – confidence interval.