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. Author manuscript; available in PMC: 2014 Jul 3.
Published in final edited form as: Cancer. 2010 Oct 13;117(5):948–956. doi: 10.1002/cncr.25544

Table 4. Comparison of Cox Proportional Hazards Models for Survival Outcomes.

Disease-Free Survival Overall Survival
Model Variables Included C-statistic Calibration Statistic C-statistic Calibration Statistic
0 Comorbidity 0.6745 13.669 0.695 10.354
Stage
LN status
Grade
1 Model 0 0.6883 11.497 0.719 10.965
+ BMI
2 Model 1 0.6951 12.545 0.723 4.322
+ Albumin
+ Creatinine
+ Lymphocyte %