Brazilian WHOQOL-OLD Module version: a Rasch analysis of a new instrument
Autor(a) principal: | |
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Data de Publicação: | 2008 |
Outros Autores: | , , |
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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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 |
_version_ |
1748936496842276864 |