Table 2.

Discriminability measures of the items selected through each procedure.

	Area under ROC curve	Accuracy	Sensitivity	Specificity
CFA	0.6214	0.460	0.922	0.277
GRM	0.6274	0.507	0.839	0.369
Item-total correlation	0.6254	0.522	0.763	0.423
Elastic nets	0.6142	0.516	0.777	0.407
All items	0.5854	0.482	0.830	0.356

ROC, Receiver Operating Characteristic.