Table 2.

Analysis of ROC curve in the diagnosis of different sizes of thyroid nodules

Sizes	Best cut‐off value	Sensitivity	Specificity	Maximum Jordan index	AUC
0.3‐1.0 cm	0.692	0.975	0.724	0.699	0.919
1.0‐1.5 cm	0.692	0.689	0.889	0.578	0.853
1.5‐2.0 cm	0.758	0.588	0.909	0.497	0.807
0.3‐2.0 cm	0.692	0.879	0.723	0.611	0.879

Abbreviation: AUC, area under the ROC curve.