Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil
Autor(a) principal: | |
---|---|
Data de Publicação: | 2010 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Cadernos de Saúde Pública |
Texto Completo: | https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435 |
Resumo: | This study describes the validity of a food frequency questionnaire (FFQ) in 93 low-income women (20-65 years), participating in a case-control study in São Paulo, Brazil. Two FFQ (FFQ1 and FFQ2, 12 months apart) and three 24-hour dietary recalls (24hR) were conducted between 2003 and 2004 to estimate dietary intake during the past year. The Pearson correlation coefficients (crude, energy-adjusted and de-attenuated) were used for comparisons between FFQ and 24hR. The agreement between the methods was further examined by the Bland-Altman analysis. For the assessment of long-term reliability, the energy-adjusted intra-class correlation coefficients were mostly around 0.40, but higher for vitamin A and folate (0.50-0.56). Energy-adjusted, attenuation-corrected Pearson validity correlations between FFQ and DR ranged from 0.30-0.54 for macronutrients to 0.20-0.48 for micronutrients, with higher value for calcium (0.75). There were small proportions of grossly misclassified nutrient intakes, while Bland-Altman plots indicated that the FFQ is accurate in assessing nutrient intake at a group level. |
id |
FIOCRUZ-5_36ca84f10165add6b5a9ab67ff4031c5 |
---|---|
oai_identifier_str |
oai:ojs.teste-cadernos.ensp.fiocruz.br:article/4435 |
network_acronym_str |
FIOCRUZ-5 |
network_name_str |
Cadernos de Saúde Pública |
repository_id_str |
|
spelling |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern BrazilFood ConsumptionValidation StudiesQuestionnairesWomenThis study describes the validity of a food frequency questionnaire (FFQ) in 93 low-income women (20-65 years), participating in a case-control study in São Paulo, Brazil. Two FFQ (FFQ1 and FFQ2, 12 months apart) and three 24-hour dietary recalls (24hR) were conducted between 2003 and 2004 to estimate dietary intake during the past year. The Pearson correlation coefficients (crude, energy-adjusted and de-attenuated) were used for comparisons between FFQ and 24hR. The agreement between the methods was further examined by the Bland-Altman analysis. For the assessment of long-term reliability, the energy-adjusted intra-class correlation coefficients were mostly around 0.40, but higher for vitamin A and folate (0.50-0.56). Energy-adjusted, attenuation-corrected Pearson validity correlations between FFQ and DR ranged from 0.30-0.54 for macronutrients to 0.20-0.48 for micronutrients, with higher value for calcium (0.75). There were small proportions of grossly misclassified nutrient intakes, while Bland-Altman plots indicated that the FFQ is accurate in assessing nutrient intake at a group level.Este estudo compara a validade de questionário de freqüência alimentar (QFA) em 93 mulheres participantes de estudo caso-controle em São Paulo, Brasil. Dois QFA (12 meses de intervalo entre QFA1 e QFA2) e 3 recordatórios de 24 horas (R24h) foram obtidos entre 2003 e 2004. Coeficientes de correlação de Pearson (brutos, ajustados pelas calorias totais e com correção intra-indivíduos) foram utilizados na comparação entre os métodos. A concordância entre QFA e R24h foi avaliada pela análise de Bland-Altman. Na avaliação de reprodutibilidade em longo prazo, coeficientes de correlação intraclasse ajustados pelas calorias totais foram próximos de 0,40, com valores maiores para vitamina A e folato (0,50-0,56). Coeficientes de correlação de Pearson ajustados pelas calorias totais e de-atenuados variaram de 0,30-0,54 para macronutrientes a 0,20-0,48 para micronutrientes, com valores maiores para cálcio (0,75). Houve uma pequena proporção de erro de classificação, e a análise de Bland-Altman sugere que o QFA é adequado para a classificação do consumo de nutrientes para o grupo de indivíduos estudado.Reports in Public HealthCadernos de Saúde Pública2010-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlapplication/pdfhttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435Reports in Public Health; Vol. 26 No. 11 (2010): NovemberCadernos de Saúde Pública; v. 26 n. 11 (2010): Novembro1678-44640102-311Xreponame:Cadernos de Saúde Públicainstname:Fundação Oswaldo Cruz (FIOCRUZ)instacron:FIOCRUZenghttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435/9035https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435/9036Cardoso, Marly AugustoTomita, Luciana YukiLaguna, Elaine Cristinainfo:eu-repo/semantics/openAccess2024-03-06T15:28:11Zoai:ojs.teste-cadernos.ensp.fiocruz.br:article/4435Revistahttps://cadernos.ensp.fiocruz.br/ojs/index.php/csphttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/oaicadernos@ensp.fiocruz.br||cadernos@ensp.fiocruz.br1678-44640102-311Xopendoar:2024-03-06T13:05:07.491284Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)true |
dc.title.none.fl_str_mv |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
title |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
spellingShingle |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil Cardoso, Marly Augusto Food Consumption Validation Studies Questionnaires Women |
title_short |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
title_full |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
title_fullStr |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
title_full_unstemmed |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
title_sort |
Assessing the validity of a food frequency questionnaire among low-income women in São Paulo, southeastern Brazil |
author |
Cardoso, Marly Augusto |
author_facet |
Cardoso, Marly Augusto Tomita, Luciana Yuki Laguna, Elaine Cristina |
author_role |
author |
author2 |
Tomita, Luciana Yuki Laguna, Elaine Cristina |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Cardoso, Marly Augusto Tomita, Luciana Yuki Laguna, Elaine Cristina |
dc.subject.por.fl_str_mv |
Food Consumption Validation Studies Questionnaires Women |
topic |
Food Consumption Validation Studies Questionnaires Women |
description |
This study describes the validity of a food frequency questionnaire (FFQ) in 93 low-income women (20-65 years), participating in a case-control study in São Paulo, Brazil. Two FFQ (FFQ1 and FFQ2, 12 months apart) and three 24-hour dietary recalls (24hR) were conducted between 2003 and 2004 to estimate dietary intake during the past year. The Pearson correlation coefficients (crude, energy-adjusted and de-attenuated) were used for comparisons between FFQ and 24hR. The agreement between the methods was further examined by the Bland-Altman analysis. For the assessment of long-term reliability, the energy-adjusted intra-class correlation coefficients were mostly around 0.40, but higher for vitamin A and folate (0.50-0.56). Energy-adjusted, attenuation-corrected Pearson validity correlations between FFQ and DR ranged from 0.30-0.54 for macronutrients to 0.20-0.48 for micronutrients, with higher value for calcium (0.75). There were small proportions of grossly misclassified nutrient intakes, while Bland-Altman plots indicated that the FFQ is accurate in assessing nutrient intake at a group level. |
publishDate |
2010 |
dc.date.none.fl_str_mv |
2010-11-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435 |
url |
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435/9035 https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/4435/9036 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html application/pdf |
dc.publisher.none.fl_str_mv |
Reports in Public Health Cadernos de Saúde Pública |
publisher.none.fl_str_mv |
Reports in Public Health Cadernos de Saúde Pública |
dc.source.none.fl_str_mv |
Reports in Public Health; Vol. 26 No. 11 (2010): November Cadernos de Saúde Pública; v. 26 n. 11 (2010): Novembro 1678-4464 0102-311X reponame:Cadernos de Saúde Pública instname:Fundação Oswaldo Cruz (FIOCRUZ) instacron:FIOCRUZ |
instname_str |
Fundação Oswaldo Cruz (FIOCRUZ) |
instacron_str |
FIOCRUZ |
institution |
FIOCRUZ |
reponame_str |
Cadernos de Saúde Pública |
collection |
Cadernos de Saúde Pública |
repository.name.fl_str_mv |
Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ) |
repository.mail.fl_str_mv |
cadernos@ensp.fiocruz.br||cadernos@ensp.fiocruz.br |
_version_ |
1798943368383823872 |