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Rasch analysis of the upper-limb subscale of the stroke rehabilitation assessment of movement (STREAM) tool in an acute stroke cohort Rasch analysis of the upper-limb subscale of the STREAM tool in an acute stroke population

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Mateen, Bilal A., Baker, Karen and Playford, Diane (2019) Rasch analysis of the upper-limb subscale of the stroke rehabilitation assessment of movement (STREAM) tool in an acute stroke cohort Rasch analysis of the upper-limb subscale of the STREAM tool in an acute stroke population. Topics in Stroke Rehabilitation, 26 (1). pp. 24-31. doi:10.1080/10749357.2018.1517510

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Official URL: http://dx.doi.org/10.1080/10749357.2018.1517510

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Abstract

Background

Stroke is a leading cause of disability worldwide. The most common impairment resulting from stroke is upper-limb weakness.

Objectives

To determine the usefulness and psychometric validity of the upper-limb subscale of the STREAM in an acute stroke population.

Methods

Rasch Analysis, including unidimensionality assumption testing, determining model fit, and analysis of: reliability, residual correlations, and differential item functioning.

Results

125 individuals were assessed using the upper-limb subscale of the Stroke Rehabilitation Assessment of Movement (STREAM) tool. Rasch analysis suggests the STREAM is a unidimensional measure. However, when scored using the originally proposed method (0–2), or using the response pattern (0–5) neither variant fit the Rasch model (p < 0.05). Although, the reliability was good (Person-Separation Index – 0.847 and 0.903, respectively). Correcting for the disordered thresholds, and thereby producing the new scoring pattern, led to substantial improvement in the overall fit (chi-square probability of fit – 22%), however, the reliability was slightly reduced (PSI – 0.806).

Conclusions

The study proposes a new scoring method for the upper-limb subscale of the STREAM outcome measure in the acute stroke population.

Item Type: Journal Article
Subjects: R Medicine > RC Internal medicine
Divisions: Faculty of Medicine > Warwick Medical School > Health Sciences
Faculty of Medicine > Warwick Medical School > Health Sciences > Social Science & Systems in Health (SSSH)
Faculty of Medicine > Warwick Medical School
Library of Congress Subject Headings (LCSH): Cerebrovascular disease -- Rehabilitation, Disabilities, Psychometrics, Arm -- Paralysis
Journal or Publication Title: Topics in Stroke Rehabilitation
Publisher: Taylor & Francis
ISSN: 1074-9357
Official Date: 2019
Dates:
DateEvent
2019Published
3 October 2018Available
25 August 2018Accepted
Volume: 26
Number: 1
Page Range: pp. 24-31
DOI: 10.1080/10749357.2018.1517510
Status: Peer Reviewed
Publication Status: Published
Publisher Statement: This is an Accepted Manuscript of an article published by Taylor & Francis in Topics in Stroke Rehabilitation on 03 Oct 2018, available online: http://www.tandfonline.com/10.1080/10749357.2018.1517510
Access rights to Published version: Restricted or Subscription Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
TSA 2007/14Stroke Associationhttp://dx.doi.org/10.13039/501100000364

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