CROSS CULTURAL EVALUATION OF THE SHORT FORM 8 ITEM PARKINSON'S DISEASE QUESTIONNAIRE: RESULTS FROM AMERICA, CANADA, JAPAN, ITALY AND SPAIN

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• Cross-cultural evaluation of the short form 8-item Parkinson's Disease Questionnaire (PDQ-8): results from America, Canada, Japan, Italy and Spain.
  Dahkki: Jenkinson, C, et al.
  Almmustuhtton: (2007)
• Cross-cultural evaluation of the Parkinson's Disease Questionnaire: tests of data quality, score reliability, response rate, and scaling assumptions in the United States, Canada, Japan, Italy, and Spain.
  Dahkki: Jenkinson, C, et al.
  Almmustuhtton: (2003)
• Pretesting newly generated items to complement the 39- item Parkinson’s disease questionnaire (PDQ)
  Dahkki: Morley, D, et al.
  Almmustuhtton: (2019)
• Newly generated items to complement the 39-item Parkinson’s Disease Questionnaire
  Dahkki: Morley, D, et al.
  Almmustuhtton: (2019)
• Comparison of the 40-item Amyotrophic Lateral Sclerosis Assessment Questionnaire (ALSAQ-40) with a short-form five-item version (ALSAQ-5) in a longitudinal survey.
  Dahkki: Jenkinson, C, et al.
  Almmustuhtton: (2007)