title: [Validation of the Japanese version of the Parkinson's Disease Questionnaire].
abstract: The PDQ-39 (Parkinson's Disease Questionnaire-39) is a specific quality-of-life (QOL) scale for patients with Parkinson's disease (PD). It evaluates the dysfunction of daily living and quality of life. We developed the Japanese-translated version of PDQ-39 and examined the validity of the PDQ-39 in Japanese PD patients.
  
  
  METHODS
  A total of 156 patients with PD were studied (age 35-86 years, Hoehn-Yahr stage 1 to 4). None of the patients had dementia.
  
  
  METHODS
  Semi-structured interviews were conducted by one trained interviewer. The PDQ-39, SF-36 (36-item short form of the Medical Outcome Study questionnaire), EQ5D (Euro Qol), and NAS-J (Nottingham Adjustment Scale Japanese version) were used for evaluation. The attending physician of each patient rated the patient's condition by using the UPDRS (Unified Parkinson's Disease Rating Scale).
  
  
  RESULTS
  Exploratory factor analysis, Cronbach alpha, and construct validity were fair, and there were significant correlations between the results of the PDQ-39 and the corresponding parts of the UPDRS and SF-36, and the Hoehn-Yahr stage, respectively.
  
  
  CONCLUSIONS
  The Japanese version of the PDQ-39 is valuable for evaluating the QOL of Japanese patients with PD. Results of comparison of PDQ-39 with other scales of the QOL such as NAS-J suggest the possibility that acceptance of the disease and feelings of self-achievement improve the QOL of patients with Parkinson's disease.
authors.affiliation: Department of Neurology, Wakayama Medical University.
authors.forename: Junko
authors.initials: J
authors.lastname: Kohmoto
authors.forename: Sadayoshi
authors.initials: S
authors.lastname: Ohbu
authors.forename: Masanori
authors.initials: M
authors.lastname: Nagaoka
authors.forename: Yoshimi
authors.initials: Y
authors.lastname: Suzukamo
authors.forename: Tameko
authors.initials: T
authors.lastname: Kihira
authors.forename: Yoshikuni
authors.initials: Y
authors.lastname: Mizuno
authors.forename: Yoichi M
authors.initials: YM
authors.lastname: Ito
authors.forename: M
authors.initials: M
authors.lastname: Hith
authors.forename: Takuhiro
authors.initials: T
authors.lastname: Yamaguchi
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Ohashi
authors.forename: Shunichi
authors.initials: S
authors.lastname: Fukuhara
authors.forename: Tomoyoshi
authors.initials: T
authors.lastname: Kondo
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D006801:Humans; D008875:Middle Aged; D010300:Parkinson Disease / Q000503:physiopathology* / Q000523:psychology*; D011788:Quality of Life; D011795:Surveys and Questionnaires / Q000592:standards*