2026-06-14T05:05:00Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/80952025-06-19T16:45:16Zcom_20.500.12105_2052com_20.500.12105_2051col_20.500.12105_19608col_20.500.12105_19613
Repisalud
author
Forjaz, Maria João
author
Ayala, Alba
author
Martínez-Martín, Pablo
author
Dujardin, Kathy
author
Pontone, Gregory M
author
Starkstein, Sergio E
author
Weintraub, Daniel
author
Leentjens, Albert F G
funder
Parkinson Research Foundation
2019-08-01T12:01:15Z
2019-08-01T12:01:15Z
2015-04
Mov Disord. 2015 Apr;30(4):545-51.
10.1002/mds.26111
1531-8257
08853185
Movement disorders : official journal of the Movement Disorder Society
25546697
http://hdl.handle.net/20.500.12105/8095
The 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.
eng
Parkinson's disease
Rasch analysis
Anxiety
Rater
Is the Parkinson Anxiety Scale comparable across raters?
research article
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IsTheParkinsonAnxiety_2015.pdf.txt
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IsParkinsonAnxietyScale_2015.pdf.txt