Prognostic Factors and Treatment Results of High-Grade Osteosarcoma in Norway: A Scope Beyond the “Classical” Patient

Table 6

Univariate Cox-regression analysis of overall survival among all adequate treated high-grade osteosarcoma patients.

	Patients (%)	RR^a (95% CI^b)
Gender
Female	84 (39)	1
Male	132 (61)	1.9 (1.1–3.0)	0.012
Axial versus extremity
Extremity	183 (85)	1
Axial	33 (15)	1.3 (0.7–2.2)	0.455
Primary metastatic disease
No	188 (87)	1
Yes	28 (13)	2.9 (1.7–4.8)	<0.001
Age
≤40 years	187 (87)	1
>40 years	29 (13)	1.3 (0.7–2.3)	0.402

Relative risk, ^bconfidence interval, and value.