Table 3.

The AUC of the combined model and image-only model.

	Training cohort		Validation cohort
	AUC	95% CI	AUC	95% CI
Predict ALNM
Combined	0.87	0.81–0.92	0.84	0.73–0.92
Image-only	0.81	0.70–0.89	0.75	0.65–0.86

ALNM, axillary lymph node metastasis; AUC, area under the curve; CI, confidence interval.

Combined model (image-only model+ lymphovascular invasion).

Image-only model (ALN cortex thickness and obliterated ALN fatty hilum).