Quality of life in Parkinson's disease patients: validation of the Short-Form Eight-item Parkinson's Disease Questionnaire (PDQ-8) in Taiwan.
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| Title: | Quality of life in Parkinson's disease patients: validation of the Short-Form Eight-item Parkinson's Disease Questionnaire (PDQ-8) in Taiwan. |
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| Authors: | Huang, Tzu-Ting, Hsu, Hua-Yun, Wang, Bi-Hwa, Chen, Kang-Hua |
| Source: | Quality of Life Research. May2011, Vol. 20 Issue 4, p499-505. 7p. |
| Subjects: | Quality of life, Parkinson's disease, Questionnaires, Movement disorders, Psychometrics, Self-evaluation |
| Abstract: | Purpose: This study sought to evaluate the Chinese version of the eight-item Parkinson's Disease Questionnaire (PDQ-8), through standard psychometric techniques. Methods: A cross-sectional study was conducted on 100 Parkinson's disease patients attending a Movement Disorders Unit. Neurologists' assessments were based on Hoehn and Yahr, Schwab and England and Unified Parkinson's Disease Rating Scales. Patients' self-evaluations included the Taiwanese Depression Questionnaire, the 39-item Parkinson's Disease Questionnaire (PDQ-39) and PDQ-8, pain, and Pittsburgh Sleep Quality Index. Analyses for internal consistency, inter-rater reliability, and construct validity were performed. Results: There was no evidence of floor or ceiling effects. The alpha coefficient was 0.81. Correlation of social support and bodily discomfort with the PDQ-8 was modest (0.46 and 0.36, respectively). PDQ-8 convergent validity with the PDQ-39 was very high ( r = 0.96), and known-groups validity proved satisfactory. Conclusions: The results of this study suggest the PDQ-8 is a valid and reliable disease-specific health-related quality-of-life instrument for Parkinson's disease in Taiwan when used independently of the PDQ-39. [ABSTRACT FROM AUTHOR] |
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| Database: | Psychology and Behavioral Sciences Collection |
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