Table 3. Results in a multivariate Cox proportional hazards analysis on PFS.

Variable		Hazard Ratio (95% Confidence Limits)	P Value
Age > 55+	55	2.05 (1.12–3.75)	0.020
Tumor degree	Grade IV	2.92 (1.15–7.41)	0.024
Resection degree	Incomplete	1.74 (1.01–2.98)	0.045