Table 3.

Multivariable Cox Regression of Event-Free Survival

Parametera	Group Comparison	N	Events	Hazard Ratio	Lower 95% CL	Upper 95% CL	P
Dissemination	No dissemination	112	61				.011
	Disseminated disease	16	15	2.41	1.28	4.57
Age at diagnosis	≥11 y	39	16				.002
	5-10 y	47	29	2.31	1.24	4.33
	0-4 y	42	31	2.74	1.48	5.06
Extent of resection	Total resection	24	8				.008
	Subtotal resection	14	8	1.77	0.66	4.77
	Partial resection	63	38	2.78	1.29	6.00
	Biopsy	20	17	4.67	1.89	11.53

Bold values indicate statistically significant findings.

^aNo interactions were selected (P > .187 for all interaction terms).