Table 5.

Performance of the Multivariable Cox Proportional Hazards Regression Models Adjusted for Age, Sex, Race, Tumor Site, Tumor Stage, Treatment and Comorbidity

	Df*	LR χ2†	R2‡	BIC§	c-index
No comorbidity	33	2687.11	0.358	30820.72	0.820
ACE-27	36	2773.71	0.367	30755.38	0.825
CCI	36	2746.61	0.364	30784.03	0.824
CCI+ACE-27	39	2802.41	0.370	30749.50	0.827

^*Degrees of freedom.

^†Likelihood ratio Chi square.

^‡Nagelkerke’s R square.

^§Bayesian information criterion.