Validation of Revised Chinese Version of PD-CRS in Parkinson’s Disease Patients

Table 6

Accuracy measures of PD-CRS.

Scale version	Cutoff	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)	LR (+)	LR (−)
PD-NC/PD-MCI (AUC 0.803)	78.5	78.4	65.9	69.7	75.3	2.29	0.33
	80.5	75.7	75.0	75.2	75.5	3.03	0.32
	81.5	73.0	77.3	76.3	74.1	3.22	0.35
PD-MCI/PDD (AUC 0.864)	54.5	90.9	63.6	71.4	87.5	2.49	0.14
	57.5	84.1	72.7	75.5	82.1	3.08	0.22
	58.5	77.3	72.7	73.9	76.2	2.83	0.31
PD-NC/PDD (AUC 0.984)	69.0	94.6	90.9	91.2	94.4	10.39	0.06
	73.5	89.2	98.9	98.8	90.1	81.09	0.11
	75.0	86.5	99.6	99.5	88.1	216.25	0.14

PD-CRS: Parkinson’s disease-cognitive rating scale; SD: standard deviation; PD: Parkinson’s disease; PD-NC: PD patients with normal cognition; PD-MCI: PD patients with mild cognitive impairment; PDD: PD patients with dementia; AUC: area under the curve; PPV: positive predictive value; NPV: negative predictive value; LR+: positive likelihood ratio; LR−: negative likelihood ratio.