Table A2.

Multivariable Cox Proportional Hazards Regression Model of 10-Year Progression-Free and Overall Survival

Variable	Hazard Ratio	95% CI	P
Progression-free survival (n = 777)
Age	0.99	0.97 to 1.00	.09
Male	1.25	1.01 to 1.54	.04
Incomplete resection	1.88	1.51 to 2.33	< .001
Adjuvant first-line radiation	0.63	0.50 to 0.81	< .001
Adjuvant first-line chemotherapy	1.02	0.79 to 1.32	.87
EPN_PFA subgroup	2.18	1.31 to 3.62	.003
Overall survival (n = 778)
Age	0.98	0.96 to 1.00	.13
Male	1.40	1.06 to 1.84	.02
Incomplete resection	2.14	1.61 to 2.84	< .001
Adjuvant first-line radiation	0.52	0.38 to 0.71	< .001
Adjuvant first-line chemotherapy	0.91	0.66 to 1.27	.6
EPN_PFA Subgroup	4.27	1.86 to 9.81	< .001