title: Screening of cognitive impairment in patients with Parkinson's disease: diagnostic validity of the Brazilian versions of the Montreal Cognitive Assessment and the Addenbrooke's Cognitive Examination-Revised.
abstract: OBJECTIVE
  The aim of the present study is to examine the accuracy of the Brazilian versions of the Montreal Cognitive Assessment (MoCA) and the Addenbrooke's Cognitive Examination-Revised (ACE-R) to screen for mild cognitive impairment (PDMCI) and dementia (PDD) in patients with Parkinson's disease (PD).
  
  
  METHODS
  Both scales were administered to a final convenience sample of 79 patients with PD. Patients were evaluated by a neurologist, a psychiatrist and a neuropsychologist using UPDRS, Hoehn and Yahr and Schwab and England scales, global deterioration scale, a psychiatric structured interview, Mattis Dementia Rating Scale and other cognitive tests.
  
  
  RESULTS
  There were 32 patients with PDMCI and 17 patients with PDD. The MoCA and the ACE-R were able to discriminate patients with PDD from the others.
  
  
  CONCLUSIONS
  Both scales showed to be useful to screen for dementia but not for mild cognitive impairment in patients with PD.
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Emmanuelle
authors.initials: E
authors.lastname: Sobreira
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Márcio A
authors.initials: MA
authors.lastname: Pena-Pereira
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Alan L
authors.initials: AL
authors.lastname: Eckeli
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Manoel A
authors.initials: MA
authors.lastname: Sobreira-Neto
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Marcos H N
authors.initials: MH
authors.lastname: Chagas
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Maria P
authors.initials: MP
authors.lastname: Foss
authors.affiliation: Department of Psychiatry and Behavioral Sciences, School of Medicine, University of Washington, Seattle, WA, USA.
authors.forename: Brenna
authors.initials: B
authors.lastname: Cholerton
authors.affiliation: Department of Neurology, School of Medicine, University of Washington, Seattle, WA, USA.
authors.forename: Cyrus P
authors.initials: CP
authors.lastname: Zabetian
authors.affiliation: Department of Neurology, School of Medicine, University of Washington, Seattle, WA, USA.
authors.forename: Ignacio F
authors.initials: IF
authors.lastname: Mata
authors.affiliation: Departamento de Neurociências e Comportamento, Faculdade de Medicina de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
authors.forename: Vitor
authors.initials: V
authors.lastname: Tumas
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001938:Brazil; D060825:Cognitive Dysfunction / Q000175:diagnosis* / Q000503:physiopathology; D003704:Dementia / Q000175:diagnosis* / Q000503:physiopathology; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests / Q000592:standards*; D010300:Parkinson Disease / Q000150:complications* / Q000503:physiopathology; D011569:Psychiatric Status Rating Scales / Q000592:standards*; D015203:Reproducibility of Results