Publication:
Is the Parkinson Anxiety Scale comparable across raters?

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dc.contributor.authorForjaz, Maria João
dc.contributor.authorAyala, Alba
dc.contributor.authorMartínez-Martín, Pablo
dc.contributor.authorDujardin, Kathy
dc.contributor.authorPontone, Gregory M
dc.contributor.authorStarkstein, Sergio E
dc.contributor.authorWeintraub, Daniel
dc.contributor.authorLeentjens, Albert F G
dc.contributor.funderFoundation for Parkinson Research
dc.date.accessioned2019-08-01T12:01:15Z
dc.date.available2019-08-01T12:01:15Z
dc.date.issued2015-04
dc.description.abstractThe Parkinson Anxiety Scale is a new scale developed to measure anxiety severity in Parkinson's disease specifically. It consists of three dimensions: persistent anxiety, episodic anxiety, and avoidance behavior. This study aimed to assess the measurement properties of the scale while controlling for the rater (self- vs. clinician-rated) effect. The Parkinson Anxiety Scale was administered to a cross-sectional multicenter international sample of 362 Parkinson's disease patients. Both patients and clinicians rated the patient's anxiety independently. A many-facet Rasch model design was applied to estimate and remove the rater effect. The following measurement properties were assessed: fit to the Rasch model, unidimensionality, reliability, differential item functioning, item local independency, interrater reliability (self or clinician), and scale targeting. In addition, test-retest stability, construct validity, precision, and diagnostic properties of the Parkinson Anxiety Scale were also analyzed. A good fit to the Rasch model was obtained for Parkinson Anxiety Scale dimensions A and B, after the removal of one item and rescoring of the response scale for certain items, whereas dimension C showed marginal fit. Self versus clinician rating differences were of small magnitude, with patients reporting higher anxiety levels than clinicians. The linear measure for Parkinson Anxiety Scale dimensions A and B showed good convergent construct with other anxiety measures and good diagnostic properties. Parkinson Anxiety Scale modified dimensions A and B provide valid and reliable measures of anxiety in Parkinson's disease that are comparable across raters. Further studies are needed with dimension C.es_ES
dc.description.sponsorshipThis study was supported by a grant from the Michael J Fox Foundation for Parkinson Research (MJFF; www.michaeljfox.org).es_ES
dc.format.number4es_ES
dc.format.page545-51es_ES
dc.format.volume30es_ES
dc.identifier.citationMov Disord. 2015 Apr;30(4):545-51.es_ES
dc.identifier.doi10.1002/mds.26111es_ES
dc.identifier.e-issn1531-8257es_ES
dc.identifier.issn08853185es_ES
dc.identifier.journalMovement disorders : official journal of the Movement Disorder Societyes_ES
dc.identifier.pubmedID25546697es_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12105/8095
dc.language.isoenges_ES
dc.publisherWileyes_ES
dc.relation.publisherversionhttps://doi.org/10.1002/mds.26111es_ES
dc.repisalud.centroISCIII::Escuela Nacional de Sanidades_ES
dc.repisalud.centroISCIII::Centro Nacional de Epidemiologíaes_ES
dc.repisalud.institucionISCIIIes_ES
dc.rights.accessRightsopen accesses_ES
dc.rights.licenseAtribución-NoComercial-CompartirIgual 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/*
dc.subjectParkinson's diseasees_ES
dc.subjectRasch analysises_ES
dc.subjectAnxietyes_ES
dc.subjectRateres_ES
dc.subject.meshAdultes_ES
dc.subject.meshAgedes_ES
dc.titleIs the Parkinson Anxiety Scale comparable across raters?es_ES
dc.typejournal articlees_ES
dc.type.hasVersionSMURes_ES
dspace.entity.typePublication
relation.isAuthorOfPublication16cb2ba7-777d-4912-ac39-11335a3dd901
relation.isAuthorOfPublication88f80e70-adbb-4a33-8f2f-3ca9e26b356a
relation.isAuthorOfPublicationa0911756-32d0-4d9b-8e11-3140646980a3
relation.isAuthorOfPublication.latestForDiscovery16cb2ba7-777d-4912-ac39-11335a3dd901
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