MovDisordV3, Main, Exploration, bibRecord, 002A71

Longitudinal Psychometric Attributes, Responsiveness, and Importance of Change : An Approach Using the SCOPA-Psychosocial Questionnaire

Identifieur interne : 002A71 ( Main/Exploration ); précédent : 002A70; suivant : 002A72

Longitudinal Psychometric Attributes, Responsiveness, and Importance of Change : An Approach Using the SCOPA-Psychosocial Questionnaire

Auteurs : Pablo Martinez-Martin [Espagne] ; Francisco Javier Carod-Artal [Brésil] ; Luciola Da Silveira Ribeiro [Brésil] ; Sofia Ziomkowski [Brésil] ; Antonio Pedro Vargas [Brésil] ; Wladimir Kummer [Brésil] ; Hudson Mourao Mesquita [Brésil]

Source :

Movement disorders [ 0885-3185 ] ; 2008.

RBID : Pascal:08-0450250

Descripteurs français

Pascal (Inist)
- Maladie de Parkinson, Pathologie du système nerveux, Psychométrie, Voie abord, Questionnaire, Validité.

English descriptors

KwdEn :
- Nervous system diseases, Parkinson disease, Psychometrics, Questionnaire, Surgical approach, Validity.

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 (a = 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.

Affiliations:

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Le document en format XML

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<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 (a = 0.80-0.84), convergent validity (r<sub>s</sub>
 = 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>
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<tree><country name="Espagne"><region name="Communauté de Madrid"><name sortKey="Martinez Martin, Pablo" sort="Martinez Martin, Pablo" uniqKey="Martinez Martin P" first="Pablo" last="Martinez-Martin">Pablo Martinez-Martin</name>
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<country name="Brésil"><region name="District fédéral (Brésil)"><name sortKey="Javier Carod Artal, Francisco" sort="Javier Carod Artal, Francisco" uniqKey="Javier Carod Artal F" first="Francisco" last="Javier Carod-Artal">Francisco Javier Carod-Artal</name>
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<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>
<name sortKey="Kummer, Wladimir" sort="Kummer, Wladimir" uniqKey="Kummer W" first="Wladimir" last="Kummer">Wladimir Kummer</name>
<name sortKey="Mourao Mesquita, Hudson" sort="Mourao Mesquita, Hudson" uniqKey="Mourao Mesquita H" first="Hudson" last="Mourao Mesquita">Hudson Mourao Mesquita</name>
<name sortKey="Pedro Vargas, Antonio" sort="Pedro Vargas, Antonio" uniqKey="Pedro Vargas A" first="Antonio" last="Pedro Vargas">Antonio Pedro Vargas</name>
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	Movement Disorders (revue)
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Movement Disorders (revue)

Longitudinal Psychometric Attributes, Responsiveness, and Importance of Change : An Approach Using the SCOPA-Psychosocial Questionnaire

Longitudinal Psychometric Attributes, Responsiveness, and Importance of Change : An Approach Using the SCOPA-Psychosocial Questionnaire

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri