Table 2.

Optimal cut-off scores for ACE-III

Comparison	Optimal cut-off	AUC	Youden index	Sensitivity	Specificity
Dementia–control	71	0.97	0.84	0.87	0.97
MCI–control	84	0.85	0.54	0.92	0.63
Dementia–MCI	61	0.80	0.45	0.66	0.79