Reproducibility, relative validity and calibration of a food frequency questionnaire for adults

Detalhes bibliográficos
Autor(a) principal: Silva, Neuciani Ferreira da
Data de Publicação: 2013
Outros Autores: Sichieri, Rosely, Pereira, Rosângela Alves, Silva, Regina Maria Veras Gonçalves da, Ferreira, Márcia Gonçalves
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/5245
Resumo: The purpose of the present study was to evaluate the reproducibility and relative validity and calibrate the dietary intake assessment of a food frequency questionnaire (FFQ) using a random sample of 195 adults aged 20 to 50 years from the Central-West Region of Brazil. The reference method used by the study was two 24-hour recalls (24hR) that provided energy-adjusted deattenuated food intake data for comparison purposes. With respect to reproducibility, the average weighted kappa was 0.43 and exact agreement was 41.5%. With regard to relative validity, correlation coefficients ranged from 0.32 (thiamin) to 0.51 (carbohydrates), with a mean of 0.41. Deattenuation and adjustment for energy intake decreased most correlation coefficients in relation to crude values. The food frequency questionnaire showed good reliability and moderate validity for most nutrients based on classification into quartiles of energy and nutrient intake. The calibrated means of the FFQ were more similar to the means estimated from the 24hR and showed lower standard deviation.
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spelling Reproducibility, relative validity and calibration of a food frequency questionnaire for adultsReproducibility of ResultsQuestionnairesAdultThe purpose of the present study was to evaluate the reproducibility and relative validity and calibrate the dietary intake assessment of a food frequency questionnaire (FFQ) using a random sample of 195 adults aged 20 to 50 years from the Central-West Region of Brazil. The reference method used by the study was two 24-hour recalls (24hR) that provided energy-adjusted deattenuated food intake data for comparison purposes. With respect to reproducibility, the average weighted kappa was 0.43 and exact agreement was 41.5%. With regard to relative validity, correlation coefficients ranged from 0.32 (thiamin) to 0.51 (carbohydrates), with a mean of 0.41. Deattenuation and adjustment for energy intake decreased most correlation coefficients in relation to crude values. The food frequency questionnaire showed good reliability and moderate validity for most nutrients based on classification into quartiles of energy and nutrient intake. The calibrated means of the FFQ were more similar to the means estimated from the 24hR and showed lower standard deviation.El objetivo del estudio fue evaluar la reproducibilidad y la validez relativa de un cuestionario de frecuencia alimentaria (CFA) y estimar sus factores de calibración. Fue estudiada una muestra aleatoria de 195 adultos del centro-oeste de Brasil, con edades entre 20 y 50 años. El método de referencia utilizado fue el recordatorio de 24 horas (R24h). En cuanto a la reproducibilidad, el kappa medio ponderado fue 0,43 y la concordancia exacta fue de un 41,5%. En relación con la validez relativa, los coeficientes de correlación variaron de 0,32 (tiamina), a 0,51 (carbohidratos), con una media de 0,41. Se observó una disminución de los coeficientes de correlación obtenidos, en cuanto a los nutrientes sin atenuación y ajustados por el consumo de energía, cuando se comparan con los coeficientes obtenidos para los valores brutos. El CFA evaluado demostró buena reproducibilidad y una validez moderada para la mayoría de los nutrientes cuando fue evaluado por la categorización por cuartiles. Las medias del CFA calibradas quedaron más cerca a las medias obtenidas por los R24h, con menores desviaciones estándar.O objetivo do estudo foi avaliar a reprodutibilidade e a validade relativa de um questionário de frequência alimentar (QFA) e estimar seus fatores de calibração. Uma amostra aleatória de 195 adultos, com idades entre 20 e 50 anos, foi estudada no Centro-oeste do Brasil. O método de referência utilizado foi o recordatório de 24 horas (R24h). Quanto à reprodutibilidade, o kappa médio ponderado foi de 0,43 e a concordância exata foi de 41,5%. Com relação à validade relativa, os coeficientes de correlação variaram de 0,32 (tiamina) a 0,51 (carboidratos), com média de 0,41. A deatenuação associada ao ajuste para a energia reduziu a maioria dos coeficientes de correlação em relação aos valores brutos obtidos para os nutrientes. O QFA avaliado mostrou boa reprodutibilidade e validade moderada para a maioria dos nutrientes, quando avaliada pela categorização em quartis. As médias do QFA calibrado ficaram mais próximas das obtidas pelo R24h, com desvios-padrão menores.Reports in Public HealthCadernos de Saúde Pública2013-09-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlapplication/pdfhttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5245Reports in Public Health; Vol. 29 No. 9 (2013): SeptemberCadernos de Saúde Pública; v. 29 n. 9 (2013): Setembro1678-44640102-311Xreponame:Cadernos de Saúde Públicainstname:Fundação Oswaldo Cruz (FIOCRUZ)instacron:FIOCRUZenghttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5245/10759https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5245/10760Silva, Neuciani Ferreira daSichieri, RoselyPereira, Rosângela AlvesSilva, Regina Maria Veras Gonçalves daFerreira, Márcia Gonçalvesinfo:eu-repo/semantics/openAccess2024-03-06T15:28:37Zoai:ojs.teste-cadernos.ensp.fiocruz.br:article/5245Revistahttps://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:2024-03-06T13:06:02.659210Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)true
dc.title.none.fl_str_mv Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
title Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
spellingShingle Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
Silva, Neuciani Ferreira da
Reproducibility of Results
Questionnaires
Adult
title_short Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
title_full Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
title_fullStr Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
title_full_unstemmed Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
title_sort Reproducibility, relative validity and calibration of a food frequency questionnaire for adults
author Silva, Neuciani Ferreira da
author_facet Silva, Neuciani Ferreira da
Sichieri, Rosely
Pereira, Rosângela Alves
Silva, Regina Maria Veras Gonçalves da
Ferreira, Márcia Gonçalves
author_role author
author2 Sichieri, Rosely
Pereira, Rosângela Alves
Silva, Regina Maria Veras Gonçalves da
Ferreira, Márcia Gonçalves
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Silva, Neuciani Ferreira da
Sichieri, Rosely
Pereira, Rosângela Alves
Silva, Regina Maria Veras Gonçalves da
Ferreira, Márcia Gonçalves
dc.subject.por.fl_str_mv Reproducibility of Results
Questionnaires
Adult
topic Reproducibility of Results
Questionnaires
Adult
description The purpose of the present study was to evaluate the reproducibility and relative validity and calibrate the dietary intake assessment of a food frequency questionnaire (FFQ) using a random sample of 195 adults aged 20 to 50 years from the Central-West Region of Brazil. The reference method used by the study was two 24-hour recalls (24hR) that provided energy-adjusted deattenuated food intake data for comparison purposes. With respect to reproducibility, the average weighted kappa was 0.43 and exact agreement was 41.5%. With regard to relative validity, correlation coefficients ranged from 0.32 (thiamin) to 0.51 (carbohydrates), with a mean of 0.41. Deattenuation and adjustment for energy intake decreased most correlation coefficients in relation to crude values. The food frequency questionnaire showed good reliability and moderate validity for most nutrients based on classification into quartiles of energy and nutrient intake. The calibrated means of the FFQ were more similar to the means estimated from the 24hR and showed lower standard deviation.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-01
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/5245
url https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5245
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/5245/10759
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5245/10760
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. 29 No. 9 (2013): September
Cadernos de Saúde Pública; v. 29 n. 9 (2013): Setembro
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
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