TABLE IV.

Univariate Analysis for Progression-Free Survival

Variable	Hazard Ratio*	95% Confidence Interval	P Value
Pre-therapy SUVmax	1.09	0.76 to 1.55	0.65
SUVdiff	0.61	0.41 to 0.91	0.01
Tumor size	1.63	1.07 to 2.5	0.02
Age	1.42	0.86 to 2.33	0.17
Sex	1.41	0.68 to 2.9	0.36
Tumor type (bone vs. soft-tissue sarcoma)	0.27	0.11 to 0.65	0.004
Tumor grade	0.78	0.39 to 1.59	0.5
Tumor site (truncal vs. extremity)	3.08	1.51 to 6.29	0.002

^*For a one-standard-deviation change in the covariate.