Dementia in idiopathic Parkinson's disease: prevalence and relationship with symptoms and signs of Parkinsonism

A whole population cohort of 157 patients with idiopathic Parkinsonism, most of whom had previously been clinically examined by Mutch (1986 a), were assessed to determine prevalence figures for dementia and examine the relationship between dementia, cognitive impairment and Parkinsonian signs. Demen...

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Bibliographic Details
Published in:Psychological medicine 1991-02, Vol.21 (1), p.69-76
Main Authors: Ebmeier, K. P., Calder, S. A., Crawford, J. R., Stewart, L., Cochrane, R. H. B., Besson, J. A. O.
Format: Article
Language:English
Subjects:
Adult
Aged
Aged, 80 and over
Biological and medical sciences
Cross-Sectional Studies
Dementia - diagnosis
Dementia - epidemiology
Dementia - psychology
Female
Follow-Up Studies
Geriatrics
Humans
Incidence
Male
Medical sciences
Middle Aged
Neurologic Examination - statistics & numerical data
Neuropsychological Tests - statistics & numerical data
Original Articles
Parkinson Disease - diagnosis
Parkinson Disease - epidemiology
Parkinson Disease - psychology
Psychology. Psychoanalysis. Psychiatry
Psychopathology. Psychiatry
Scotland - epidemiology
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Summary:A whole population cohort of 157 patients with idiopathic Parkinsonism, most of whom had previously been clinically examined by Mutch (1986 a), were assessed to determine prevalence figures for dementia and examine the relationship between dementia, cognitive impairment and Parkinsonian signs. Dementia according to DSM-III-R criteria was diagnosed in 23·3% of all patients (95% confidence interval: 17·1 to 32·4%). Dementia and cognitive impairment were associated with overall measures of Parkinsonian impairment and rigidity, but not tremor, even after controlling for age, sex and education.
ISSN:0033-2917
1469-8978
DOI:10.1017/S0033291700014665