Table 2.

Predictors of OS and PFS.

		PFS			OS
Variable	HR*	95% CI	P	HR*	95% CI	P
RP exploration (ref, no RP exploration)	0.85	0.76 to 0.95	0.004	0.85	0.75 to 0.96	0.009
Residual disease (ref, MGRD)	0.73	0.64 to 0.85	<0.001	0.74	0.63 to 0.87	<0.001
Disease group
DS low (ref, DS-High)	1.29	0.85 to 1.96	0.223	1.34	0.86 to 2.09	0.195
DS mod (ref, DS-High)	0.76	0.67 to 0.87	<0.001	0.72	0.62 to 0.83	<0.001
Surgical score group
CS High (ref, CS mod)	1.08	0.95 to 1.24	0.251	0.98	0.84 to 1.13	0.745
CS Low (ref, CS mod)	0.90	0.79 to 1.04	0.153	0.91	0.78 to 1.06	0.234
No ascites (ref, yes)	0.83	0.73 to 0.94	0.003	0.79	0.69 to 0.92	0.002
Age (per 1-year increase)	1.03	0.98 to 1.08	0.205	1.11	1.05 to 1.17	<0.001

Abbreviations: CS, surgical complexity score; DS, disease score; HR, hazard ratio; MGRD, minimal gross residual disease; OS, overall survival; PFS, progression free survival; R0, no gross residual disease; RP, retroperitoneal; ref, reference.

^*HR estimates obtained from multivariable proportional hazards models.