Intra- and peritumoral MRI radiomics assisted in predicting radiochemotherapy response in metastatic cervical lymph nodes of nasopharyngeal cancer

Table 4 Comparisons of AUC between the Clinical-radiomic model and the other radiomic models in the training and validation sets

Pairwise comparison	AUC	Z	P ^†
Training set
Clinical-radiomic	0.941	-	-
Intra + Peri	0.934	0.762	0.446
Intra	0.910	1.107	0.268
Peri	0.887	1.570	0.116
Validation set
Clinical-radiomic	0.783	-	-
Intra + Peri	0.774	0.586	0.558
Intra	0.737	0.639	0.522
Peri	0.794	0.167	0.867

†P values were calculated by the DeLong test. AUC the area under the curve, Intra intratumoral, Peri peritumoral

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