Longitudinal psychometric attributes, responsiveness, and importance of change: An approach using the SCOPA-Psychosocial questionnaire.
Identifieur interne : 002150 ( PubMed/Curation ); précédent : 002149; suivant : 002151Longitudinal psychometric attributes, responsiveness, and importance of change: An approach using the SCOPA-Psychosocial questionnaire.
Auteurs : Pablo Martínez-Martin [Espagne] ; Francisco Javier Carod-Artal ; Luciola Da Silveira Ribeiro ; Sofia Ziomkowski ; Antonio Pedro Vargas ; Wladimir Kummer ; Hudson Mourão MesquitaSource :
- Movement disorders : official journal of the Movement Disorder Society [ 1531-8257 ] ; 2008.
English descriptors
- KwdEn :
- Activities of Daily Living, Aged, Cross-Sectional Studies, Female, Health Status Indicators, Humans, Longitudinal Studies, Male, Middle Aged, Parkinson Disease (psychology), Psychiatric Status Rating Scales, Psychometrics, Quality of Life, Questionnaires, Reproducibility of Results, Retrospective Studies, Social Behavior.
- MESH :
- psychology : Parkinson Disease.
- Activities of Daily Living, Aged, Cross-Sectional Studies, Female, Health Status Indicators, Humans, Longitudinal Studies, Male, Middle Aged, Psychiatric Status Rating Scales, Psychometrics, Quality of Life, Questionnaires, Reproducibility of Results, Retrospective Studies, Social Behavior.
Abstract
The objective of this study was to illustrate the analysis of longitudinal validity, responsiveness, and importance of change, using the SCOPA-Psychosocial Questionnaire (SCOPA-PS) as a source of empirical data. Sixty-seven patients with PD in Hoehn and Yahr (HY) stage 2 were followed up for 1 year and assessed by means of the Schwab and England Scale, Unified PD Rating Scale (UPDRS), Hospital Anxiety and Depression Scale (HADS), PDQ-39, and SCOPA-PS. A range of methods was applied to enable each of the target attributes to be analyzed from different conceptual stances. The SCOPA-PS displayed satisfactory acceptability (no floor or ceiling effect), internal consistency (alpha = 0.80-0.84), convergent validity (r(S) = 0.70-0.82 with PDQ-39), and precision (SEM = 8.80), both at baseline and at the end of follow-up. The threshold value for significant change ranged from 17.25 (1.96 SEM) to 24.39 (Smallest real difference and Reliable change index). Threshold values for a clinically meaningful change were 0.73-1.26 (effect size, standardized response mean, responsiveness statistic). Change in SCOPA-PS scores correlated strongly with change in total UPDRS, HADS, and PDQ-39 scores, and reliably detected 70% of cases that worsened according to the PDQ-39. The minimally important change (MIC) for "minimally impaired" patients as per the PDQ39 was 8.30-9.10 points. Indices such as 1.96 SEM, effect size, and correlation with the change in other measures provide useful information about different concepts of responsiveness. The MIC should be determined for each specific setting, using distribution- and anchor-based methods. The SCOPA-PS showed satisfactory longitudinal attributes and responsiveness in stage-2 Brazilian patients with PD across 1 year of follow-up.
DOI: 10.1002/mds.22202
PubMed: 18649392
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<record><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Longitudinal psychometric attributes, responsiveness, and importance of change: An approach using the SCOPA-Psychosocial questionnaire.</title><author><name sortKey="Martinez Martin, Pablo" sort="Martinez Martin, Pablo" uniqKey="Martinez Martin P" first="Pablo" last="Martínez-Martin">Pablo Martínez-Martin</name><affiliation wicri:level="1"><nlm:affiliation>Consortium for Biomedical Research in Neurodegenerative Diseases (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain. pmartinez@isciii.es</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Consortium for Biomedical Research in Neurodegenerative Diseases (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), National Center for Epidemiology, Carlos III Institute of Health, Madrid</wicri:regionArea></affiliation></author><author><name sortKey="Carod Artal, Francisco Javier" sort="Carod Artal, Francisco Javier" uniqKey="Carod Artal F" first="Francisco Javier" last="Carod-Artal">Francisco Javier Carod-Artal</name></author><author><name sortKey="Da Silveira Ribeiro, Luciola" sort="Da Silveira Ribeiro, Luciola" uniqKey="Da Silveira Ribeiro L" first="Luciola" last="Da Silveira Ribeiro">Luciola Da Silveira Ribeiro</name></author><author><name sortKey="Ziomkowski, Sofia" sort="Ziomkowski, Sofia" uniqKey="Ziomkowski S" first="Sofia" last="Ziomkowski">Sofia Ziomkowski</name></author><author><name sortKey="Vargas, Antonio Pedro" sort="Vargas, Antonio Pedro" uniqKey="Vargas A" first="Antonio Pedro" last="Vargas">Antonio Pedro Vargas</name></author><author><name sortKey="Kummer, Wladimir" sort="Kummer, Wladimir" uniqKey="Kummer W" first="Wladimir" last="Kummer">Wladimir Kummer</name></author><author><name sortKey="Mesquita, Hudson Mourao" sort="Mesquita, Hudson 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National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain. pmartinez@isciii.es</nlm:affiliation><country xml:lang="fr">Espagne</country><wicri:regionArea>Consortium for Biomedical Research in Neurodegenerative Diseases (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), National Center for Epidemiology, Carlos III Institute of Health, Madrid</wicri:regionArea></affiliation></author><author><name sortKey="Carod Artal, Francisco Javier" sort="Carod Artal, Francisco Javier" uniqKey="Carod Artal F" first="Francisco Javier" last="Carod-Artal">Francisco Javier Carod-Artal</name></author><author><name sortKey="Da Silveira Ribeiro, Luciola" sort="Da Silveira Ribeiro, Luciola" uniqKey="Da Silveira Ribeiro L" first="Luciola" last="Da Silveira Ribeiro">Luciola Da Silveira Ribeiro</name></author><author><name sortKey="Ziomkowski, Sofia" sort="Ziomkowski, Sofia" uniqKey="Ziomkowski S" first="Sofia" last="Ziomkowski">Sofia Ziomkowski</name></author><author><name sortKey="Vargas, Antonio Pedro" sort="Vargas, Antonio Pedro" uniqKey="Vargas A" first="Antonio Pedro" last="Vargas">Antonio Pedro Vargas</name></author><author><name sortKey="Kummer, Wladimir" sort="Kummer, Wladimir" uniqKey="Kummer W" first="Wladimir" last="Kummer">Wladimir Kummer</name></author><author><name sortKey="Mesquita, Hudson Mourao" sort="Mesquita, Hudson Mourao" uniqKey="Mesquita H" first="Hudson Mourão" last="Mesquita">Hudson Mourão Mesquita</name></author></analytic><series><title level="j">Movement disorders : official journal of the Movement Disorder Society</title><idno type="eISSN">1531-8257</idno><imprint><date when="2008" type="published">2008</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Activities of Daily Living</term><term>Aged</term><term>Cross-Sectional Studies</term><term>Female</term><term>Health Status Indicators</term><term>Humans</term><term>Longitudinal Studies</term><term>Male</term><term>Middle Aged</term><term>Parkinson Disease (psychology)</term><term>Psychiatric Status Rating Scales</term><term>Psychometrics</term><term>Quality of Life</term><term>Questionnaires</term><term>Reproducibility of Results</term><term>Retrospective Studies</term><term>Social Behavior</term></keywords><keywords scheme="MESH" qualifier="psychology" xml:lang="en"><term>Parkinson Disease</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Activities of Daily Living</term><term>Aged</term><term>Cross-Sectional Studies</term><term>Female</term><term>Health Status Indicators</term><term>Humans</term><term>Longitudinal Studies</term><term>Male</term><term>Middle Aged</term><term>Psychiatric Status Rating Scales</term><term>Psychometrics</term><term>Quality of Life</term><term>Questionnaires</term><term>Reproducibility of Results</term><term>Retrospective Studies</term><term>Social Behavior</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The objective of this study was to illustrate the analysis of longitudinal validity, responsiveness, and importance of change, using the SCOPA-Psychosocial Questionnaire (SCOPA-PS) as a source of empirical data. Sixty-seven patients with PD in Hoehn and Yahr (HY) stage 2 were followed up for 1 year and assessed by means of the Schwab and England Scale, Unified PD Rating Scale (UPDRS), Hospital Anxiety and Depression Scale (HADS), PDQ-39, and SCOPA-PS. A range of methods was applied to enable each of the target attributes to be analyzed from different conceptual stances. The SCOPA-PS displayed satisfactory acceptability (no floor or ceiling effect), internal consistency (alpha = 0.80-0.84), convergent validity (r(S) = 0.70-0.82 with PDQ-39), and precision (SEM = 8.80), both at baseline and at the end of follow-up. The threshold value for significant change ranged from 17.25 (1.96 SEM) to 24.39 (Smallest real difference and Reliable change index). Threshold values for a clinically meaningful change were 0.73-1.26 (effect size, standardized response mean, responsiveness statistic). Change in SCOPA-PS scores correlated strongly with change in total UPDRS, HADS, and PDQ-39 scores, and reliably detected 70% of cases that worsened according to the PDQ-39. The minimally important change (MIC) for "minimally impaired" patients as per the PDQ39 was 8.30-9.10 points. Indices such as 1.96 SEM, effect size, and correlation with the change in other measures provide useful information about different concepts of responsiveness. The MIC should be determined for each specific setting, using distribution- and anchor-based methods. The SCOPA-PS showed satisfactory longitudinal attributes and responsiveness in stage-2 Brazilian patients with PD across 1 year of follow-up.</div></front></TEI><pubmed><MedlineCitation Owner="NLM" Status="MEDLINE"><PMID Version="1">18649392</PMID><DateCreated><Year>2008</Year><Month>10</Month><Day>02</Day></DateCreated><DateCompleted><Year>2009</Year><Month>04</Month><Day>08</Day></DateCompleted><Article PubModel="Print"><Journal><ISSN IssnType="Electronic">1531-8257</ISSN><JournalIssue CitedMedium="Internet"><Volume>23</Volume><Issue>11</Issue><PubDate><Year>2008</Year><Month>Aug</Month><Day>15</Day></PubDate></JournalIssue><Title>Movement disorders : official journal of the Movement Disorder Society</Title><ISOAbbreviation>Mov. Disord.</ISOAbbreviation></Journal><ArticleTitle>Longitudinal psychometric attributes, responsiveness, and importance of change: An approach using the SCOPA-Psychosocial questionnaire.</ArticleTitle><Pagination><MedlinePgn>1516-23</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1002/mds.22202</ELocationID><Abstract><AbstractText>The objective of this study was to illustrate the analysis of longitudinal validity, responsiveness, and importance of change, using the SCOPA-Psychosocial Questionnaire (SCOPA-PS) as a source of empirical data. Sixty-seven patients with PD in Hoehn and Yahr (HY) stage 2 were followed up for 1 year and assessed by means of the Schwab and England Scale, Unified PD Rating Scale (UPDRS), Hospital Anxiety and Depression Scale (HADS), PDQ-39, and SCOPA-PS. A range of methods was applied to enable each of the target attributes to be analyzed from different conceptual stances. The SCOPA-PS displayed satisfactory acceptability (no floor or ceiling effect), internal consistency (alpha = 0.80-0.84), convergent validity (r(S) = 0.70-0.82 with PDQ-39), and precision (SEM = 8.80), both at baseline and at the end of follow-up. The threshold value for significant change ranged from 17.25 (1.96 SEM) to 24.39 (Smallest real difference and Reliable change index). Threshold values for a clinically meaningful change were 0.73-1.26 (effect size, standardized response mean, responsiveness statistic). Change in SCOPA-PS scores correlated strongly with change in total UPDRS, HADS, and PDQ-39 scores, and reliably detected 70% of cases that worsened according to the PDQ-39. The minimally important change (MIC) for "minimally impaired" patients as per the PDQ39 was 8.30-9.10 points. Indices such as 1.96 SEM, effect size, and correlation with the change in other measures provide useful information about different concepts of responsiveness. The MIC should be determined for each specific setting, using distribution- and anchor-based methods. The SCOPA-PS showed satisfactory longitudinal attributes and responsiveness in stage-2 Brazilian patients with PD across 1 year of follow-up.</AbstractText><CopyrightInformation>(c) 2008 Movement Disorder Society.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Martínez-Martin</LastName><ForeName>Pablo</ForeName><Initials>P</Initials><AffiliationInfo><Affiliation>Consortium for Biomedical Research in Neurodegenerative Diseases (Centro de Investigación Biomédica en Red Enfermedades Neurodegenerativas), National Center for Epidemiology, Carlos III Institute of Health, Madrid, Spain. pmartinez@isciii.es</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Carod-Artal</LastName><ForeName>Francisco Javier</ForeName><Initials>FJ</Initials></Author><Author ValidYN="Y"><LastName>da Silveira Ribeiro</LastName><ForeName>Luciola</ForeName><Initials>L</Initials></Author><Author ValidYN="Y"><LastName>Ziomkowski</LastName><ForeName>Sofia</ForeName><Initials>S</Initials></Author><Author ValidYN="Y"><LastName>Vargas</LastName><ForeName>Antonio Pedro</ForeName><Initials>AP</Initials></Author><Author ValidYN="Y"><LastName>Kummer</LastName><ForeName>Wladimir</ForeName><Initials>W</Initials></Author><Author ValidYN="Y"><LastName>Mesquita</LastName><ForeName>Hudson Mourão</ForeName><Initials>HM</Initials></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType></PublicationTypeList></Article><MedlineJournalInfo><Country>United States</Country><MedlineTA>Mov Disord</MedlineTA><NlmUniqueID>8610688</NlmUniqueID><ISSNLinking>0885-3185</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000203">Activities of Daily Living</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D000368">Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D003430">Cross-Sectional Studies</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D005260">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006305">Health Status Indicators</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D006801">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008137">Longitudinal Studies</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008297">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D008875">Middle Aged</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D010300">Parkinson Disease</DescriptorName><QualifierName MajorTopicYN="Y" UI="Q000523">psychology</QualifierName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011569">Psychiatric Status Rating Scales</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D011594">Psychometrics</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D011788">Quality of Life</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D011795">Questionnaires</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D015203">Reproducibility of Results</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="N" UI="D012189">Retrospective Studies</DescriptorName></MeshHeading><MeshHeading><DescriptorName MajorTopicYN="Y" UI="D012919">Social Behavior</DescriptorName></MeshHeading></MeshHeadingList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="pubmed"><Year>2008</Year><Month>7</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2009</Year><Month>4</Month><Day>9</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2008</Year><Month>7</Month><Day>24</Day><Hour>9</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="doi">10.1002/mds.22202</ArticleId><ArticleId IdType="pubmed">18649392</ArticleId></ArticleIdList></PubmedData></pubmed></record>Pour manipuler ce document sous Unix (Dilib)
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