Is the parkinson anxiety scale comparable across raters?

Document type :

Article dans une revue scientifique: Article original

DOI :

10.1002/mds.26111

PMID :

Permalink :

http://hdl.handle.net/20.500.12210/16116

Title :

Is the parkinson anxiety scale comparable across raters?

Author(s) :

Forjaz, Maria Joao [Auteur]
Ayala, Alba [Auteur]
Martinez-Martin, Pablo [Auteur]
Dujardin, Kathy [Auteur]

Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U 1171 - EA 1046 [TCDV]
Troubles cognitifs dégénératifs et vasculaires - U1171
Pontone, Gregory M. [Auteur]
Starkstein, Sergio E. [Auteur]
Weintraub, Daniel [Auteur]
Leentjens, Albert F. G. [Auteur]

Journal title :

Movement disorders . official journal of the Movement Disorder Society

Abbreviated title :

Mov. Disord.

Volume number :

30

Pages :

545-551

Publication date :

2015-04-01

ISSN :

0885-3185

English keyword(s) :

rater
Rasch analysis
Parkinson''s disease
anxiety

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

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 ...
Show more >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.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

CHU Lille
CNRS
Inserm
Université de Lille

Collections :

Lille Neurosciences & Cognition (LilNCog) - U 1172

Research team(s) :

Troubles cognitifs dégénératifs et vasculaires

Submission date :

2019-11-27T13:33:37Z