Table 3. The C-index of prognostic nomograms and TNM stage for prediction of OS and DFS.

Model for survival prediction	C-index (95% CI)	P
Nomogram (OS)*	0.69 (0.64–0.74)	–
Nomogram (DFS)#	0.70 (0.64–0.75)	–
TNM stage (OS)	0.58 (0.53–0.64)	–
TNM stage (DFS)	0.60 (0.55–0.65)	–
Nomogram (OS) vs. TNM stage (OS)		0.005
Nomogram (DFS) vs. TNM stage (DFS)		0.001

*, nomogram (OS), including four risk factors (cancer type, TNM, TC and TG); ^#, nomogram (DFS), including five risk factors (cancer type, TNM, TC, TG and LDL-C). OS, overall survival; DFS, disease-free-survival; C-index, concordance index; CI, confidence interval.