The 39-item Parkinson's Disease Questionnaire (PDQ-39): is it a unidimensional construct?
نویسندگان
چکیده
منابع مشابه
Validation of the Korean version of the 39-Item Parkinson's Disease Questionnaire (PDQ-39).
PURPOSE To evaluate the reliability and validity of the Korean version of the 39-item Parkinson's disease questionnaire (PDQ-39). METHODS Cross-cultural adaptation was performed according to the international guidelines: forward and backward translation, focus group meeting, and a field test. With Korean consensus translation produced, validation was assessed by evaluating reliability and val...
متن کاملThe 39 item Parkinson's disease questionnaire (PDQ-39) revisited: implications for evidence based medicine.
BACKGROUND The 39 item Parkinson's disease questionnaire (PDQ-39) is the most widely used patient reported rating scale in Parkinson's disease. However, several fundamental measurement assumptions necessary for confident use and interpretation of the eight PDQ-39 scales have not been fully addressed. METHODS Postal survey PDQ-39 data from 202 people with Parkinson's disease (54% men; mean age...
متن کاملThe Parkinson's Disease Questionnaire (PDQ-39): development and validation of a Parkinson's disease summary index score.
OBJECTIVES to briefly outline the development and validation of the Parkinson's Disease Questionnaire (PDQ-39) and then to provide evidence for the use of the measure as either a profile of health status scores or a single index figure. DESIGN the PDQ-39 was administered in two surveys: a postal survey of patients registered with local branches of the Parkinson's Disease Society of Great Brit...
متن کاملThe Parkinson's Disease Questionnaire (PDQ-39): evidence for a method of imputing missing data.
BACKGROUND The Parkinson's Disease Questionnaire (PDQ-39) is the most widely used Parkinson's specific measure of health status. It is increasingly used in treatment trials, sometimes as a primary end-point, where any missing data can potentially cause difficulties in analyses. OBJECTIVES The purpose of this article is to evaluate the Expectation Maximisation (EM) algorithm for the imputation...
متن کاملValidation of an Estonian version of the Parkinson's Disease Questionnaire (PDQ-39)
INTRODUCTION Diagnosis and management of Parkinson's disease (PD) rely heavily on evaluation of clinical symptoms and patients' subjective perception of their condition. The purpose of this study was to evaluate the validity, acceptability, and reliability of the Estonian version of the 39-question Parkinson 's disease Questionnaire (PDQ-39). METHODS Study subjects were approached during thei...
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ژورنال
عنوان ژورنال: Therapeutic Advances in Neurological Disorders
سال: 2009
ISSN: 1756-2864,1756-2864
DOI: 10.1177/1756285609103726