Risk of cognitive impairment or dementia in relatives of patients with Parkinson disease.

Abstract

BACKGROUND The evidence for increased risk of dementia in relatives of patients with Parkinson disease (PD) remains conflicting. OBJECTIVE To study the risk of cognitive impairment or dementia in first-degree relatives of patients with PD. DESIGN, SETTING, AND PARTICIPANTS We conducted a historical cohort study of 1019 first-degree relatives of 162… (More)

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