Table 1.

Reader study ROC area under the curve values.

Quartile	Diameter	AUC	Confidence intervala
1	1.37 mm	0.670	0.593-0.766
2 (median)	2.32 mm	0.777	0.723-0.860
3	5.09 mm	0.956	0.907-0.997
N/A	Combined	0.798	0.702-0.894

^a95% confidence interval.