Table 5.

Univariate Analysis of Clinical, Pathologic and Treatment Variable for PFS in patients with osteosarcoma and high grade spindle cell sarcoma of bone

Characteristics	Pts n.	% 4-months PFS	95 % CI	P-value
Overall
	46	46	31–61
Age
≥18 years	23	65	43–88	0.4
<18 years	23	35	17–53
Sex
Female	12	50	22–78	0.7
Male	34	44	27–62
Mets Site
Lung only	24	61	41–81	0.1
Multiple	22	30	11–50
Line GD
2	13	60	32–87	0.4
≥3	33	41	24.58
ECOG
0	29	54	35–72	0.003
1	13	43	15–71
2	4	0	0
Histology
Osteosarcoma	35	56	39–73	0.005
HGS	11	18	0–41

PFS Progression Free Survival, HGS high grade spindle cell sarcoma of bone, GD gemcitabine and docetaxel