Table 1.

Univariable analysis for progression-free survival

Univariable
Factors	Category	Univariable analysis
		HR (95% CI)	p-value
Sex	Female (vs. Male)	0.61 (0.27–1.38)	0.23
Age (Years)	≥40 (vs. < 40)	2.04 (0.76–5.47)	0.16
Performance Status	1 (vs. 0)	1.11 (0.46–2.69)	0.81
Histological subtype	Leiomyosarcoma (vs. UPS)	0.59 (0.18–1.98)	0.40
	Synovial sarcoma (vs. UPS)	0.34 (0.10–1.12)	0.08
	Others (vs. UPS)	0.64 (0.24–1.72)	0.38
Tumor differentiation	3 (vs. 2)	0.64 (0.29–1.43)	0.28
Tumor necrosis	1 or 2 (vs. 0)	1.28 (0.56–2.93)	0.56
Tumor mitosis	2 or 3 (vs. 1)	1.14 (0.51–2.57)	0.75
Histological grade (FNCLCC)	Grade 3 (vs. 2)	0.94 (0.42–2.09)	0.87
Histological grade (Ki-67)	Grade 3 (vs. 2)	1.38 (0.61–3.12)	0.43
Tumor size	> 10 cm (vs. < 10 cm)	3.15 (1.37–7.21)	0.0067

Abbreviations: HR hazard ratio, CI confidence interval, UPS, undifferentiated pleomorphic sarcoma, FNCLCC French Federation of Cancer Center