Table 2.

Comparison of SEN, SPEC, PPV, NPV, and AUC with 95% CI among the DLB vs. ND, DLB vs. AD, and DLB vs. non-DLB groups using a cutoff score of 3/2 for the HAI-MDQ, a cutoff score of 1.37/1.38 for the SBR, and a cutoff score of 6/5 for the combination of the MDQVR or MDQSBR.

	SEN	SPEC	PPV	NPV	AUC (95% CI)
HAI-MDQ
DLB vs. ND	0.91	0.68	0.85	0.80	0.87 (0.84–0.94)
DLB vs. AD	0.91	0.76	0.85	0.86	0.89 (0.84–0.94)
DLB vs. Non-DLB	0.91	0.72	0.73	0.91	0.89 (0.85–0.93)
SBR
DLB vs. ND	0.91	0.89	0.97	0.84	0.93 (0.89–0.97)
DLB vs. AD	0.91	0.72	0.83	0.85	0.93 (0.89–0.97)
DLB vs. Non-DLB	0.91	0.80	0.79	0.92	0.90 (0.86–0.94)
MDQVR
DLB vs. ND	0.87	0.97	0.98	0.79	0.98 (0.96–1.00)
DLB vs. AD	0.87	0.91	0.93	0.82	0.95 (0.93–0.98)
DLB vs. Non-DLB	0.87	0.93	0.92	0.89	0.96 (0.94–0.98)
MDQSBR
DLB vs. ND	0.86	0.97	0.98	0.78	0.98 (0.96–1.00)
DLB vs. AD	0.86	0.90	0.92	0.81	0.95 (0.92–0.98)
DLB vs. Non-DLB	0.86	0.93	0.91	0.89	0.96 (0.94–0.98)

SEN, sensitivity; SPEC, specificity; PPV, positive predictive value; NPV, negative predictive value; AUC, area under the curve; DLB, Lewy body dementia; ND, non-dementia control; AD, Alzheimer's disease; SBR, striatal–background ratio of dopamine transporter imaging; HAI-MDQ, motor dysfunction questionnaire in the History-based Artificial Intelligence Clinical Dementia Diagnostic System; MDQVR, the composite scale of MDQ and DAT VR scale; MDQSBR, the composite scale of MDQ and SBR.