| Metric attributes of the unified Parkinson's disease rating scale 3.0 battery: part II, construct and content validity. | |
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MedLine Citation:
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PMID: 16958134 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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This article is the second of a two-part series concerning the metric properties of the following three Parkinson's disease (PD) scales: modified Hoehn and Yahr staging (H&Y), Schwab and England (S&E), and Unified Parkinson's Disease Rating Scale (UPDRS) 3.0. Part II focuses on construct and content validity. To assess construct validity, a sample of 1,136 PD patients completed the above-mentioned PD scales. Correlation coefficients between measures of disability and dysfunction [S&E, UPDRS Activities of Daily Living (ADL), and UPDRS Motor Examination] were |r| = 0.69-0.77, indicating good convergent validity. Results showed that the S&E (F(5,945) = 193.47; P < 0.0001) and UPDRS subscales discriminated between modified H&Y stages (F(20,2784) = 25.28; P < 0.001). A panel of 12 to 13 international experts rated the relevance of the scales and items. This enabled the scales' content validity index to be calculated, which ranged from 41.7% (UPDRS Mentation) to 83.3% (UPDRS Motor Examination). In conclusion, while the modified H&Y, S&E, and UPDRS displayed satisfactory construct validity, the content validity of all scales except UPDRS Motor Examination failed to attain adequate standards. |
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Authors:
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Maria João Forjaz; Pablo Martinez-Martin |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Movement disorders : official journal of the Movement Disorder Society Volume: 21 ISSN: 0885-3185 ISO Abbreviation: Mov. Disord. Publication Date: 2006 Nov |
Date Detail:
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Created Date: 2006-12-05 Completed Date: 2007-02-20 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8610688 Medline TA: Mov Disord Country: United States |
Other Details:
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Languages: eng Pagination: 1892-8 Citation Subset: IM |
Affiliation:
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Neuroepidemiology Unit, National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Analysis of Variance Disability Evaluation Female Humans Male Middle Aged Neurologic Examination Parkinson Disease / diagnosis* Reproducibility of Results Severity of Illness Index* Weights and Measures |
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