Prediction of clinical pregnancy after frozen embryo transfer based on ultrasound radiomics: an analysis based on the optimal periendometrial zone

Table 2 Performance of different sizes for PEZ in the training and external validation set

	Model	AUC (95% CI)	Accuracy	Sensitivity	Specificity
Training set	2.0 mm	0.628 (0.570–0.684)	0.624	0.611	0.641
	4.0 mm	0.647 (0.582–0.703)	0.657	0.853	0.391
	6.0 mm	0.594 (0.535–0.652)	0.567	0.431	0.750
	8.0 mm	0.580 (0.522–0.635)	0.556	0.445	0.705
External validation set	2.0 mm	0.575 (0.427–0.715)	0.647	0.838	0.419
	4.0 mm	0.633 (0.479–0.783)	0.618	0.892	0.290
	6.0 mm	0.603 (0.462–0.736)	0.529	0.432	0.645
	8.0 mm	0.561 (0.418–0.693)	0.500	0.405	0.613

ISSN: 1471-2393