Table 2.

ROC curve analysis for the different classification systems.

	Sensitivity	Specificity	AUC*	Cut-off
AACE/ACE-AME	83	48	0.666	>2
ATA	74	68	0.731	>4
BTA	83	58	0.718	>4
MUT	62	89	0.808	>3

AACE/ACE-AME Task Force on thyroid nodules, American Thyroid Association (ATA), British Thyroid Association (BTA), and Modena US Thyroid Classification (MUT),

^*AUC, area under the curve.