Evaluation of the Dutch version of the Parkinson's Disease Questionnaire 39

Parkinsonism Relat Disord. 2008;14(1):24-7. doi: 10.1016/j.parkreldis.2007.05.005. Epub 2007 Aug 16.


The psychometric properties of the Dutch version of the Parkinson's disease questionnaire 39 (PDQ39-DV) were tested in 177 patients with Parkinson's disease (PD). Internal consistency of 7 of the 8 scales was adequate (>or=0.70), but was insufficient for 'bodily discomfort' (0.59). Correlation between the PDQ39 and other instruments in this study, the SCOPA-psychosocial questionnaire, Euroqol-5D, hospital anxiety and depression scale, and a visual analogue scale for quality of life, were 0.82, 0.74, 0.63 and -0.54, respectively. The factor analysis yielded 8 factors, which accounted for 65% of the variance and revealed only small differences with the original UK version. We conclude that the PDQ39-DV displays satisfactory psychometric properties and is an appropriate instrument to assess quality of life in Dutch patients with PD.

Publication types

  • Evaluation Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Female
  • Health Status Indicators*
  • Humans
  • Male
  • Middle Aged
  • Parkinson Disease / psychology*
  • Quality of Life*
  • Reproducibility of Results
  • Surveys and Questionnaires*