Platelet-Derived Growth Factors in Non-GIST Soft-Tissue Sarcomas Identify a Subgroup of Patients with Wide Resection Margins and Poor Disease-Specific Survival

Table 4

Results of the Cox regression analysis among patients with wide resection margins.

Factor	Hazard ratio	95% CI	𝑃
Patient nationality
Norwegian	1.000
Russian	2.292	1.199–4.383	.012
Malignancy grade			.005*
1	1.000
2	4.438	1.262–15.609	.020
3	7.368	2.138–25.389	.002
Metastasis at time of diagnosis
No	1.000
Yes	3.939	1.801–8.613	.001
PDGF-B
Low	1.000
High	2.954	1.255–6.956	.013

*Overall significance as a prognostic factor. Abbreviations: PDGF: platelet-derived growth factor.