An earlier version of this article (published online Aug. 8, 2016) contained a typographic
error in the Introduction. 1 The last sentence in the Introduction read:" Existing studies on …

Background: Parkinson disease is a complex neurodegenerative disorder, and a
comorbidity of depression is common. We aimed to describe demographic and health …

PURPOSE Parkinson's disease is a complex neurodegenerative disease with depression as
a common comorbidity known to negatively affect quality of life. Yet, limited evidence exists …

Timely identification of individuals at risk for neurodegenerative diseases such as Parkinson
disease (PD) is increasingly important as more neuroprotective agents are investigated …

Depression is one of the most prevalent chronic conditions in Canada. It costs an estimated
$14 billion each year in health care expenditures and productivity losses, 1 and it causes …

Background A diagnosis of depression is common in primary care practices, but data are
lacking on the prevalence in Canadian practices. We describe the prevalence of the …

Objectives Although depression symptoms are common among patients with Parkinson's
disease (PD), the medical literature still reports underrecognition of depression in patients …

Lancet Neurology, retrospectively analysed primary care data from across the UK, and
identified symptoms that were more common in patients later diagnosed with PD than in …

Methods| We used 2007-2016 data from 5 waves of the National Health and Nutrition
Examination Survey (NHANES), administrated by the National Center for Health Statistics of …

We read with interest the article by Yu et al. that examined hospital admissions among
individuals with Parkinson's disease (PD) and found that antidopaminergic medications …