Table 3.

C-index and AUC of radiomics score-based nomogram and clinical factors.

Variables	C-index	95%CI	Adjusted C-index (bootstrap resamples)	AUC for 2-year DFS
Clinical stage	0.608	0.501-0.716	0.589	0.572
cT stage	0.519	0.415-0.623	0.510	0.518
Location	0.591	0.496-0.686	0.569	0.625
Tumour size	0.616	0.510-0.723	0.623	0.593
Radiomics score	0.670	0.586-0.754	0.665	0.658
Nomogram	0.781	0.700-0.869	0.738	0.791