Table 3.

Results of receiver operating characteristics analyses for SIMBAC total accuracy score

Parameter	NI versus MCI	NI versus DM	NI + MCI versus DM	NI versus MCI/DM	MCI versus DM
Optimal cutoff	8.5	6.5	6.5	7.5	5.5
AUC	0.77	0.97	0.91	0.84	0.82
Accuracy	67%	94%	84%	76%	75%
Sensitivity	79%	86%	86%	70%	71
Specificity	58%	75%	84%	82%	77
MMSE accuracy (cut point <24)	65%	83%	50%	63%	69% (cut point <20)
Composite score (cut point < −0.33)	71%	91%	83%	72%	62% (cut point < −0.65)

Abbreviations: NI, no impairment; MCI, mild cognitive impairment; DM, dementia; AUC, area under the curve; MMSE, ini–Mental State Examination; SIMBAC, SIMulation-Based Assessment of Cognition.

NOTE. Composite score = average of five standardized score from RAVLT-Delayed Recall, Boston Naming Test (BNT), Digit Span Test (total of backward and forward; DST), Digit Symbol Coding (DSC), and Trail Making Test–Part B (TMT-B).