Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability

[EN] Background Most instruments that assess quality of life have been validated by means of the classical test theory (CTT). However, CTT limitations have resulted in the development of alternative models, such as the Rasch rating scale model (RSM). The main goal of this paper is testing and improv...

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Autores: Gómez, Laura E., Arias González, Victor Benito, Verdugo Alonso, Miguel Ángel, Navas Macho, Patricia
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2012
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/164944
Acceso en línea:http://hdl.handle.net/10366/164944
Access Level:acceso abierto
Palabra clave:Quality of life
Assessment
Rasch model
Intellectual disability
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spelling Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disabilityGómez, Laura E.Arias González, Victor BenitoVerdugo Alonso, Miguel ÁngelNavas Macho, PatriciaQuality of lifeAssessmentRasch modelIntellectual disability[EN] Background Most instruments that assess quality of life have been validated by means of the classical test theory (CTT). However, CTT limitations have resulted in the development of alternative models, such as the Rasch rating scale model (RSM). The main goal of this paper is testing and improving the psychometric properties of the INTEGRAL Quality of Life Scale (i.e., fit statistics, person and item reliability coefficients) with RSM. Method The sample comprised 271 Spanish adults with intellectual disability. Results The results showed that the data fitted the model, point-biserial correlations were adequate, items showed precision, reliability of items (.98) and persons (.89) were adequate, and the response categories were suitable (thresholds were ordered). However, one item (“I feel excluded from society”) did not fit the model and a few items were too easy for participants to achieve. Conclusions Although it seems necessary to include more difficult items and to delete one, the INTEGRAL Scale is a useful instrument with evidence of validity.202520252012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10366/164944reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésScience and Technology Ministry (R&D Projects, 2009; PSI2009-0953)info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1649442026-06-07T06:28:51Z
dc.title.none.fl_str_mv Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
title Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
spellingShingle Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
Gómez, Laura E.
Quality of life
Assessment
Rasch model
Intellectual disability
title_short Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
title_full Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
title_fullStr Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
title_full_unstemmed Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
title_sort Application of the Rasch rating scale model to the assessment of quality of life of persons with intellectual disability
dc.creator.none.fl_str_mv Gómez, Laura E.
Arias González, Victor Benito
Verdugo Alonso, Miguel Ángel
Navas Macho, Patricia
author Gómez, Laura E.
author_facet Gómez, Laura E.
Arias González, Victor Benito
Verdugo Alonso, Miguel Ángel
Navas Macho, Patricia
author_role author
author2 Arias González, Victor Benito
Verdugo Alonso, Miguel Ángel
Navas Macho, Patricia
author2_role author
author
author
dc.subject.none.fl_str_mv Quality of life
Assessment
Rasch model
Intellectual disability
topic Quality of life
Assessment
Rasch model
Intellectual disability
description [EN] Background Most instruments that assess quality of life have been validated by means of the classical test theory (CTT). However, CTT limitations have resulted in the development of alternative models, such as the Rasch rating scale model (RSM). The main goal of this paper is testing and improving the psychometric properties of the INTEGRAL Quality of Life Scale (i.e., fit statistics, person and item reliability coefficients) with RSM. Method The sample comprised 271 Spanish adults with intellectual disability. Results The results showed that the data fitted the model, point-biserial correlations were adequate, items showed precision, reliability of items (.98) and persons (.89) were adequate, and the response categories were suitable (thresholds were ordered). However, one item (“I feel excluded from society”) did not fit the model and a few items were too easy for participants to achieve. Conclusions Although it seems necessary to include more difficult items and to delete one, the INTEGRAL Scale is a useful instrument with evidence of validity.
publishDate 2012
dc.date.none.fl_str_mv 2012
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/164944
url http://hdl.handle.net/10366/164944
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Science and Technology Ministry (R&D Projects, 2009; PSI2009-0953)
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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