Ultrasound radiomics signature for predicting central lymph node metastasis in clinically node-negative papillary thyroid microcarcinoma

Table 3 Predictive performance for central lymph node metastasis in the training and validation cohorts

Model	Group	AUC	Sensitivity	Specificity	PPV	NPV	TP	FP	TN	FN
Rad score	Training cohort	0.768	0.845	0.544	0.484	0.874	93	99	118	17
Rad score	Validation cohort	0.745	0.772	0.573	0.518	0.809	44	41	55	13
Nomogram	Training cohort	0.795	0.736	0.700	0.555	0.840	81	65	152	29
Nomogram	Validation cohort	0.774	0.667	0.760	0.623	0.793	38	23	73	19

Abbreviations: AUC, area under the curve; PPV, positive predictive value; NPV, negative predictive value; TP, true positive; FP, false positive; TN, true negative; FN, false negative

ISSN: 1756-6614