Computed tomography radiogenomics: A potential tool for prediction of molecular subtypes in gastric stromal tumor

Table 3 Predictive performance of different model for KIT exon 11 mutation

Models	ModelCT sign		ModelCT sign + rad		ModelCT sign + rad + clinic
Cohort	Training	Validation	Training	Validation	Training	Validation
AUC	0.743	0.670	0.818	0.781	0.915	0.811
Accuracy	0.673	0.643	0.753	0.714	0.833	0.794
Sensitivity	0.815	0.672	0.667	0.690	0.938	0.830
Specificity	0.531	0.500	0.840	0.833	0.728	0.600
NPV	0.741	0.240	0.716	0.357	0.922	0.400
PPV	0.635	0.867	0.806	0.952	0.776	0.917

CT: Computed tomography; AUC: Area under the curve; NPV: Negative predictive value; PPV: Positive predictive value.