Abstract
The trend toward international cooperation in research projects emphasizes the need to translate existing validated tools into local languages. The purpose of this study was to test the reliability and validity of a Chinese-translated version of the 39-item Parkinson’s Disease Questionnaire (PDQ-39). Seventy-three Taiwanese individuals with Parkinson’s disease were consecutively recruited. The internal consistency reliability was satisfactory for all domains (Cronbach’s α=0.80–0.96), except for the social support, cognition, and bodily discomfort domains (α=0.58–0.63). The convergent validity was also supported by strong correlations between domains measuring related constructs of the PDQ-39 and Unified Parkinson’s Disease Rating Scale (r=0.81–0.86), and between those of the PDQ-39 and SF-36 (r=−0.70–−0.93). Except for the bodily discomfort domain, all domains of the PDQ-39 significantly discriminated patients at different stages, as indicated by the Hoehn and Yahr scale. Overall, the results of this study are consistent with the reports of the PDQ-39 in other countries (e.g., UK, Spain, US, and Greece), which suggests that the PDQ-39 is appropriate for use among Taiwanese individuals with PD. This study lays the foundation for future combinations and comparisons of data cross-nationally.
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References
PJ Delwaide M Gonce (1993) Pathophysiology of Parkinson’s signs. J Jankovic E Tolosa (Eds) Parkinson’s Disease and Movement Disorders EditionNumber2 Williams & Wilkins Baltimore 77–92
RC Chen SF Chang CL Su THH Chen MF Yen HM Wu ZY Chen H-H Liou (2001) ArticleTitlePrevalence, incidence, and mortality of PD: A door-to-door survey in Ilan County, Taiwan. Neurology 57 1679–1686
AM Damiano C Snyder B Strausser MK Willian (1999) ArticleTitleA review of health-related quality-of-life concepts and measures for Parkinson’s disease. Qual Life Res 8 235–243
C Jenkinson R Fitzpatrick V Peto (1999) ArticleTitleHealth-related quality-of-life measurement in patients with Parkinson’s disease. Pharmacoeconomics 15 157–165
R Fitzpatrick V Peto C Jenkinson R Greenhall N Hyman (1997) ArticleTitleHealth-related quality of life in Parkinson’s disease: A study of outpatient clinic attenders. Mov Disord 12 916–922
DM Bushnell ML Martin (1999) ArticleTitleQuality of life and Parkinson’s disease: Translation and validation of the US Parkinson’s Disease Questionnaire (PDQ-39). Qual Life Res 8 345–350
P Martinez-Martin B Frades Payo (1998) ArticleTitleQuality of life in Parkinson’s disease: Validation study of the PDQ-39 Spanish version. The Grupo Centro for Study of Movement Disorders. J Neurol 245 (Suppl 1) S34–S38
Z Katsarou S Bostantjopoulou V Peto A Alevriadou G Kiosseoglou (2001) ArticleTitleQuality of life in Parkinson’s disease: Greek translation and validation of the Parkinson’s disease questionnaire (PDQ-39). Qual Life Res 10 159–163
K-L Tsang I Chi S-L Ho VW Lou TMC Lee L-W Chu (2002) ArticleTitleTranslation and validation of the standard Chinese Version of PDQ-39: A quality of life measure for patients with Parkinson’s disease. Mov Disord 17 1036–1040
S Fahn R Elton (1987) The unified Parkinson’s disease rating scale. S Fahn C Marsden D Calne M Goldstein (Eds) Recent Developments in Parkinson’s Disease, Vol 2. MacMillan New York 153–304
J-L Fuh S-J Wang S-R Lu K-D Juang S-J Lee (2000) ArticleTitlePsychometric evaluation of a Chinese (Taiwanese) version of the SF-36 health survey amongst middle-aged women from a rural community. Qual Life Res 9 675–683
MM Hoehn MD Yahr (1967) ArticleTitleParkinsonism: Onset, progression and mortality. Neurology 17 427–442 Occurrence Handle1:STN:280:CCiC3sbgtlQ%3D Occurrence Handle6067254
JE Ware KK Snow M Kosinski (2000) SF-36 Health Survey: Manual and Interpretation Guide. Quality Metric Incorporated Lincoln, RI
C Jenkinson R Fitzpatrick V Peto (1998) The Parkinson’s Disease Questionnaire: User Manual for the PDQ-39, PDQ-8 and PDQ Summary Index. University of Oxford Oxford, UK
LG Portney MP Watkins (2000) Foundations of Clinical Research: Applications to Practice EditionNumber2 Prentice-Hall Upper Saddle River, NJ
C Jenkinson V Peto R Fitzpatrick R Greenhall N Hyman (1995) ArticleTitleSelf-reported functioning and well-being in patients with Parkinson’s disease: Comparison of the short-form health survey (SF-36) and the Parkinson’s Disease Questionnaire (PDQ-39). Age and Ageing 24 505–509
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Ma, HI., Hwang, WJ. & Chen-Sea, MJ. Reliability and validity testing of a Chinese-translated version of the 39-item Parkinson’s Disease Questionnaire (PDQ-39). Qual Life Res 14, 565–569 (2005). https://doi.org/10.1007/s11136-004-0687-0
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DOI: https://doi.org/10.1007/s11136-004-0687-0