Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument

Detalhes bibliográficos
Autor(a) principal: Chachamovich,Eduardo
Data de Publicação: 2008
Outros Autores: Fleck,Marcelo P, Trentini,Clarissa, Power,Mick
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista de Saúde Pública
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102008000200017
Resumo: OBJECTIVE: To evaluate the Brazilian version of WHOQOL-OLD Module and to test potential changes to the instrument to increase its psychometric adequacy. METHODS: A total of 424 older adults living in a city in Southern Brazil completed the WHOQOL-OLD instrument, in 2005. Rasch analysis was used to explore the psychometric performance of the scale, as implemented by the RUMM2020 software. Item-trait interaction, threshold disorders, presence of differential item functioning and item fit, were analyzed. RESULTS: Two ("death and dying" and "sensory abilities") out of six domains showed inadequate item-trait interactions. Rescoring the response scale and deleting the most misperforming items led to scale improvement. The evaluation of domains and items individually showed that the "intimacy" domain does perform well in contrast to the findings using the classical approach. In addition, the "sensory abilities" domain does not derive an interval measure in its current format. CONCLUSIONS: Unidimensionality and local independence were seen in all domains. Changes in the response scale and deletion of problematic items improved the scale's performance.
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spelling Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrumentHealth of the ElderlyQuestionnairesQuality of LifePsychometricsValidity of TestsWHOQOL-OLD, RaschOBJECTIVE: To evaluate the Brazilian version of WHOQOL-OLD Module and to test potential changes to the instrument to increase its psychometric adequacy. METHODS: A total of 424 older adults living in a city in Southern Brazil completed the WHOQOL-OLD instrument, in 2005. Rasch analysis was used to explore the psychometric performance of the scale, as implemented by the RUMM2020 software. Item-trait interaction, threshold disorders, presence of differential item functioning and item fit, were analyzed. RESULTS: Two ("death and dying" and "sensory abilities") out of six domains showed inadequate item-trait interactions. Rescoring the response scale and deleting the most misperforming items led to scale improvement. The evaluation of domains and items individually showed that the "intimacy" domain does perform well in contrast to the findings using the classical approach. In addition, the "sensory abilities" domain does not derive an interval measure in its current format. CONCLUSIONS: Unidimensionality and local independence were seen in all domains. Changes in the response scale and deletion of problematic items improved the scale's performance.Faculdade de Saúde Pública da Universidade de São Paulo2008-04-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102008000200017Revista de Saúde Pública v.42 n.2 2008reponame:Revista de Saúde Públicainstname:Universidade de São Paulo (USP)instacron:USP10.1590/S0034-89102008000200017info:eu-repo/semantics/openAccessChachamovich,EduardoFleck,Marcelo PTrentini,ClarissaPower,Mickeng2008-03-27T00:00:00Zoai:scielo:S0034-89102008000200017Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=0034-8910&lng=pt&nrm=isoONGhttps://old.scielo.br/oai/scielo-oai.phprevsp@org.usp.br||revsp1@usp.br1518-87870034-8910opendoar:2008-03-27T00:00Revista de Saúde Pública - Universidade de São Paulo (USP)false
dc.title.none.fl_str_mv Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
title Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
spellingShingle Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
Chachamovich,Eduardo
Health of the Elderly
Questionnaires
Quality of Life
Psychometrics
Validity of Tests
WHOQOL-OLD, Rasch
title_short Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
title_full Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
title_fullStr Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
title_full_unstemmed Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
title_sort Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
author Chachamovich,Eduardo
author_facet Chachamovich,Eduardo
Fleck,Marcelo P
Trentini,Clarissa
Power,Mick
author_role author
author2 Fleck,Marcelo P
Trentini,Clarissa
Power,Mick
author2_role author
author
author
dc.contributor.author.fl_str_mv Chachamovich,Eduardo
Fleck,Marcelo P
Trentini,Clarissa
Power,Mick
dc.subject.por.fl_str_mv Health of the Elderly
Questionnaires
Quality of Life
Psychometrics
Validity of Tests
WHOQOL-OLD, Rasch
topic Health of the Elderly
Questionnaires
Quality of Life
Psychometrics
Validity of Tests
WHOQOL-OLD, Rasch
description OBJECTIVE: To evaluate the Brazilian version of WHOQOL-OLD Module and to test potential changes to the instrument to increase its psychometric adequacy. METHODS: A total of 424 older adults living in a city in Southern Brazil completed the WHOQOL-OLD instrument, in 2005. Rasch analysis was used to explore the psychometric performance of the scale, as implemented by the RUMM2020 software. Item-trait interaction, threshold disorders, presence of differential item functioning and item fit, were analyzed. RESULTS: Two ("death and dying" and "sensory abilities") out of six domains showed inadequate item-trait interactions. Rescoring the response scale and deleting the most misperforming items led to scale improvement. The evaluation of domains and items individually showed that the "intimacy" domain does perform well in contrast to the findings using the classical approach. In addition, the "sensory abilities" domain does not derive an interval measure in its current format. CONCLUSIONS: Unidimensionality and local independence were seen in all domains. Changes in the response scale and deletion of problematic items improved the scale's performance.
publishDate 2008
dc.date.none.fl_str_mv 2008-04-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102008000200017
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102008000200017
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0034-89102008000200017
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Faculdade de Saúde Pública da Universidade de São Paulo
publisher.none.fl_str_mv Faculdade de Saúde Pública da Universidade de São Paulo
dc.source.none.fl_str_mv Revista de Saúde Pública v.42 n.2 2008
reponame:Revista de Saúde Pública
instname:Universidade de São Paulo (USP)
instacron:USP
instname_str Universidade de São Paulo (USP)
instacron_str USP
institution USP
reponame_str Revista de Saúde Pública
collection Revista de Saúde Pública
repository.name.fl_str_mv Revista de Saúde Pública - Universidade de São Paulo (USP)
repository.mail.fl_str_mv revsp@org.usp.br||revsp1@usp.br
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