Figure 1: ROC curves distinguishing between patient groups using ACE-R and its subtests. ACE-R OA: orientation and attention domain of ACE-R, ACE-R M: memory domain of ACE-R, ACE-R F: verbal fluency domain of ACE-R, ACE-R L: language domain of ACE-R, ACE-R VA: visuospatial abilities domain of ACE-R, AUC: area under the curve, PD-NC: Parkinson’s disease with normal cognition, PD-MCI: Parkinson’s disease with mild cognitive impairment, and PD-D: Parkinson’s disease with dementia.