Convergent validity between SF-36 and WHOQOL-BREF in older adults

OBJECTIVE : To compare the reliability and convergent validity of instruments assessing quality of life in Brazilian older adults. METHODS : Cross-sectional study of 278 literate, community-dwelling older adults attending a municipal university for the elderly in Sao Carlos, SP, Southeastern Brazil between 2006 and 2008. The Brazilian versions of the SF-36 and WHOQOL-BREF instruments to assess quality of life were compared. Cronbach’s alpha coefficient was used to estimate reliability and Pearson’s correlation for comparison between the two scales. RESULTS : Most of participants were women (87.8%) with a mean age of 63.83±7.22 years. Both scales showed an acceptable internal consistency – WHOQOL-BREF Cronbach’s alpha was 0.832 and SF-36 was 0.868. There was a weak (r ≤ 0.6) correlation between the related fields in the two questionnaires. CONCLUSIONS : The SF-36 and WHOQOL-BREF are reliable instruments for clinical and research uses in Brazilian older women. To select one, researchers should consider which aspects of quality of life they aim to capture because of weak convergent validity signs. This study’s results indicate that WHOQOL-BREF may be more relevant to evaluate changes in the quality of life of older women because it prioritizes responses to the aging process and avoids focusing on impairment.

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Main Authors: Castro,Paula Costa, Driusso,Patrícia, Oishi,Jorge
Format: Digital revista
Language:English
Published: Faculdade de Saúde Pública da Universidade de São Paulo 2014
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102014000100063
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spelling oai:scielo:S0034-891020140001000632014-11-11Convergent validity between SF-36 and WHOQOL-BREF in older adultsCastro,Paula CostaDriusso,PatríciaOishi,Jorge Aging Quality of Life Reproducibility of Results Validity of Tests Evaluation of Research Programs and Tools Evaluation Studies as Topics OBJECTIVE : To compare the reliability and convergent validity of instruments assessing quality of life in Brazilian older adults. METHODS : Cross-sectional study of 278 literate, community-dwelling older adults attending a municipal university for the elderly in Sao Carlos, SP, Southeastern Brazil between 2006 and 2008. The Brazilian versions of the SF-36 and WHOQOL-BREF instruments to assess quality of life were compared. Cronbach’s alpha coefficient was used to estimate reliability and Pearson’s correlation for comparison between the two scales. RESULTS : Most of participants were women (87.8%) with a mean age of 63.83±7.22 years. Both scales showed an acceptable internal consistency – WHOQOL-BREF Cronbach’s alpha was 0.832 and SF-36 was 0.868. There was a weak (r ≤ 0.6) correlation between the related fields in the two questionnaires. CONCLUSIONS : The SF-36 and WHOQOL-BREF are reliable instruments for clinical and research uses in Brazilian older women. To select one, researchers should consider which aspects of quality of life they aim to capture because of weak convergent validity signs. This study’s results indicate that WHOQOL-BREF may be more relevant to evaluate changes in the quality of life of older women because it prioritizes responses to the aging process and avoids focusing on impairment. info:eu-repo/semantics/openAccessFaculdade de Saúde Pública da Universidade de São PauloRevista de Saúde Pública v.48 n.1 20142014-02-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102014000100063en10.1590/S0034-8910.2014048004783
institution SCIELO
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country Brasil
countrycode BR
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databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Castro,Paula Costa
Driusso,Patrícia
Oishi,Jorge
spellingShingle Castro,Paula Costa
Driusso,Patrícia
Oishi,Jorge
Convergent validity between SF-36 and WHOQOL-BREF in older adults
author_facet Castro,Paula Costa
Driusso,Patrícia
Oishi,Jorge
author_sort Castro,Paula Costa
title Convergent validity between SF-36 and WHOQOL-BREF in older adults
title_short Convergent validity between SF-36 and WHOQOL-BREF in older adults
title_full Convergent validity between SF-36 and WHOQOL-BREF in older adults
title_fullStr Convergent validity between SF-36 and WHOQOL-BREF in older adults
title_full_unstemmed Convergent validity between SF-36 and WHOQOL-BREF in older adults
title_sort convergent validity between sf-36 and whoqol-bref in older adults
description OBJECTIVE : To compare the reliability and convergent validity of instruments assessing quality of life in Brazilian older adults. METHODS : Cross-sectional study of 278 literate, community-dwelling older adults attending a municipal university for the elderly in Sao Carlos, SP, Southeastern Brazil between 2006 and 2008. The Brazilian versions of the SF-36 and WHOQOL-BREF instruments to assess quality of life were compared. Cronbach’s alpha coefficient was used to estimate reliability and Pearson’s correlation for comparison between the two scales. RESULTS : Most of participants were women (87.8%) with a mean age of 63.83±7.22 years. Both scales showed an acceptable internal consistency – WHOQOL-BREF Cronbach’s alpha was 0.832 and SF-36 was 0.868. There was a weak (r ≤ 0.6) correlation between the related fields in the two questionnaires. CONCLUSIONS : The SF-36 and WHOQOL-BREF are reliable instruments for clinical and research uses in Brazilian older women. To select one, researchers should consider which aspects of quality of life they aim to capture because of weak convergent validity signs. This study’s results indicate that WHOQOL-BREF may be more relevant to evaluate changes in the quality of life of older women because it prioritizes responses to the aging process and avoids focusing on impairment.
publisher Faculdade de Saúde Pública da Universidade de São Paulo
publishDate 2014
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0034-89102014000100063
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