title: Validity of the Brazilian version of the Neuropsychiatric Inventory Questionnaire (NPI-Q).
abstract: The NPI-Q (Neuropsychiatry Inventory-Questionnaire) was developed to facilitate the evaluation of neuropsychiatric symptoms. This study evaluated the internal consistency, the test-retest reliability of the Brazilian NPI-Q version and its convergent validity with the original NPI.
  
  
  METHODS
  The NPI-Q and the NPI were administered to 64 caregivers of dementia patients. Thirteen informants were asked to complete a second NPI-Q form.
  
  
  RESULTS
  The internal consistency of the Brazilian NPI-Q version was 0.67 for the severity scale and 0.81 for the distress scale. The test-retest reliability of the total NPI-Q severity and the distress scales were 0.97 and 0.92, respectively (p < 0.001). There were significant correlations between the total NPI-Q severity score and the NPI (r = 0.75) and between the total NPI-Q distress score and the total NPI standard distress (r = 0.74).
  
  
  CONCLUSIONS
  The Brazilian NPI-Q version showed evidence of good psychometric properties and can be used in general clinical practice.
authors.affiliation: Departamento de Demência Clínica, Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
authors.forename: Ana Luiza
authors.initials: AL
authors.lastname: Camozzato
authors.affiliation: Departamento de Demência Clínica, Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
authors.forename: Claudia
authors.initials: C
authors.lastname: Godinho
authors.affiliation: Departamento de Demência Clínica, Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
authors.forename: Renata
authors.initials: R
authors.lastname: Kochhann
authors.affiliation: Faculdade de Medicina, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
authors.forename: Graziela
authors.initials: G
authors.lastname: Massochini
authors.affiliation: Departamento de Demência Clínica, Serviço de Neurologia, Hospital de Clínicas de Porto Alegre, Porto Alegre, RS, Brazil.
authors.forename: Marcia Lorena
authors.initials: ML
authors.lastname: Chaves
mesh_terms: D001938:Brazil; D003430:Cross-Sectional Studies; D003466:Cultural Characteristics; D003704:Dementia / Q000175:diagnosis*; D039721:Diagnostic and Statistical Manual of Mental Disorders; D004522:Educational Status; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires; D014175:Translating