Objective The objective of this study was to determine the frequency and impact of
subjective cognitive complaint (SCC) in Parkinson's disease (PD) patients with normal …

Abstract Background Subjective cognitive complaints (SCCs) in Parkinson's disease (PD)
are reported frequently, but their prevalence and association with changes on objective …

This study was undertaken to determine the prevalence and correlates of cognitive
impairment (CI) and neuropsychiatric symptoms (NPS) in early, untreated patients with …

A substantial percentage of patients with newly diagnosed Parkinson's disease without
dementia are reported to be affected by cognitive impairment (CI). In practice, however, CI is …

Lack of validated data on cutoff scores for mild cognitive impairment (MCI) and sensitivity to
change in predementia stages of Parkinson's disease (PD) limit the utility of instruments …

Patients with Parkinson's disease (PD) often have cognitive deficits from the time of
diagnosis. Except in patients with dementia, the impact of cognitive symptoms on daily …

There is growing interest in identifying Parkinson's disease (PD) patients with mild cognitive
impairment (PD‐MCI), but widely disparate criteria have been used. We assessed 143 PD …

Introduction: Cognitive impairment is common in Parkinson's disease (PD), even in the early
stages, and appropriate screening tools are needed. Methods: We investigated the utility of …

The objective of this study was to identify different cognitive phenotypes in Parkinson's
disease (PD) using a data‐driven approach. A model‐based cluster analysis was conducted …

The impact of Parkinson's disease (PD) dementia is substantial and has major functional
and socioeconomic consequences. Early prediction of future cognitive impairment would …