Risk Analysis of Distal Metastasis in Chondrosarcoma and the Development and Validation of a Novel Clinical Prediction Model: A Clinical Study Based on the SEER Database

Table 4

AUC of the training group and validation group.

	Training group			Validation group
Variable	AUC	SE	95% CI	AUC	SE	95% CI
Grade	0.733	0.03	0.703 to 0.762	0.699	0.0534	0.650 to 0.745
Laterality	0.591	0.0329	0.558 to 0.623	0.678	0.0589	0.628 to 0.724
N	0.608	0.0298	0.575 to 0.640	0.55	0.0374	0.498 to 0.600
Sex	0.635	0.0284	0.603 to 0.666	0.53	0.0561	0.479 to 0.581
Surgery	0.718	0.0349	0.688 to 0.748	0.788	0.0515	0.744 to 0.828
Nomogram	0.937	0.0173	0.919 to 0.952	0.91	0.025	0.877 to 0.937