Table 3.

Areas Under the Curve of Raw and Demographically Corrected z‐scores of the PD‐CRS and Mattis DRS‐2 for Distinguishing PD‐MCI Patients from PD‐CogInt Patients

Test	AUC	90% CI	Optimal cut‐off	sensitivity	specificity
PD‐CRS raw score	0.83	0.77 – 0.89	101/102	88%	64%
MDRS‐2 raw score	0.81	0.74 – 0.88	139/140	68%	79%
PD‐CRS demographically corrected z‐score	0.80	0.73 – 0.86	−0.60	79%	72%
MDRS‐2 demographically corrected z‐score	0.78	0.70 – 0.85	−0.1	77%	67%

Abbreviations: AUC, Area under the curve; CI; Confidence Interval; Mattis DRS‐2, Mattis Dementia Rating Scale‐2; PD‐CRS, Parkinson's Disease‐Cognitive Rating Scale.