Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods

Detalhes bibliográficos
Autor(a) principal: Michelle Alessandra de Castro
Data de Publicação: 2015
Outros Autores: Valéria Troncoso Baltar, Soraya Sant'Ana de Castro Selem, Dirce Maria Lobo Marchioni, Regina Mara Fisberg
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/5800
Resumo: This study aimed to investigate the effects of factor rotation methods on interpretability and construct validity of dietary patterns derived in a representative sample of 1,102 Brazilian adults. Dietary patterns were derived from exploratory factor analysis. Orthogonal (varimax) and oblique rotations (promax, direct oblimin) were applied. Confirmatory factor analysis assessed construct validity of the dietary patterns derived according to two factor loading cut-offs (≥ |0.20| and ≥ |0.25|). Goodness-of-fit indexes assessed the model fit. Differences in composition and in interpretability of the first pattern were observed between varimax and promax/oblimin at cut-off ≥ |0.20|. At cut-off ≥ |0.25|, these differences were no longer observed. None of the patterns derived at cut-off ≥ |0.20| showed acceptable model fit. At cut-off ≥ |0.25|, the promax rotation produced the best model fit. The effects of factor rotation on dietary patterns differed according to the factor loading cut-off used in exploratory factor analysis.
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spelling Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methodsFood ConsumptionFood HabitsPublic Health NutritionStatistical Factor AnalysisThis study aimed to investigate the effects of factor rotation methods on interpretability and construct validity of dietary patterns derived in a representative sample of 1,102 Brazilian adults. Dietary patterns were derived from exploratory factor analysis. Orthogonal (varimax) and oblique rotations (promax, direct oblimin) were applied. Confirmatory factor analysis assessed construct validity of the dietary patterns derived according to two factor loading cut-offs (≥ |0.20| and ≥ |0.25|). Goodness-of-fit indexes assessed the model fit. Differences in composition and in interpretability of the first pattern were observed between varimax and promax/oblimin at cut-off ≥ |0.20|. At cut-off ≥ |0.25|, these differences were no longer observed. None of the patterns derived at cut-off ≥ |0.20| showed acceptable model fit. At cut-off ≥ |0.25|, the promax rotation produced the best model fit. The effects of factor rotation on dietary patterns differed according to the factor loading cut-off used in exploratory factor analysis.El estudio tuvo como objetivo investigar los efectos de los métodos de rotación en la interpretabilidad y validez de un constructo de patrones alimentarios, derivados de una muestra representativa de 1.102 adultos brasileños. Los patrones se derivaron de un análisis factorial exploratorio. Se aplicaron las rotaciones ortogonal (varimax) y oblicua (promax, oblimin directa). La validez de constructo de los patrones fue evaluada por un análisis factorial confirmatorio, según los puntos de corte de cargas factoriales: (≥ |0,20| y ≥ |0.25|). Se analizaron los índices de ajuste del modelo. Se observaron diferencias en la composición e interpretación del primer factor entre varimax y promax/oblimin en el punto de corte ≥ |0,20|. En el punto de corte ≥ |0,25|, ya no se observaron diferencias. Ninguno de los patrones derivados en el punto de corte ≥ |0,20| presentaron un ajuste del modelo aceptable. En el punto de corte ≥ |0,25|, la rotación promax produjo el mejor ajuste. Los efectos de las rotaciones factoriales en los patrones fueron variables, según el punto de corte de carga factorial utilizado en análisis factorial exploratorio.Objetivou-se investigar os efeitos dos métodos de rotação fatorial na interpretabilidade e validade de construto de padrões alimentares em uma amostra representativa de 1.102 adultos brasileiros. Os padrões foram derivados por análise fatorial exploratória. As rotações ortogonal (varimax) e oblíqua (promax e oblimin direta) foram utilizadas. Avaliou-se a validade de construto dos padrões segundo os pontos de corte de cargas fatoriais: (≥ |0,20| e ≥ |0,25|) por meio de análise fatorial confirmatória. Índices de qualidade de ajuste do modelo foram analisados. Observaram-se diferenças na composição e interpretabilidade do primeiro padrão obtido pelas rotações varimax e promax/oblimin no ponto de corte ≥ |0,20|. No ponto de corte ≥ |0,25|, não foram observadas diferenças. Nenhum dos padrões derivados no ponto de corte ≥ |0,20| apresentou qualidade de ajuste aceitável. No ponto de corte ≥ |0,25|, a rotação promax obteve o melhor ajuste. Os efeitos das rotações nos padrões alimentares diferiram segundo o ponto de corte de carga fatorial utilizado na análise fato-rial exploratória.Reports in Public HealthCadernos de Saúde Pública2015-02-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlapplication/pdfhttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5800Reports in Public Health; Vol. 31 No. 2 (2015): FebruaryCadernos de Saúde Pública; v. 31 n. 2 (2015): Fevereiro1678-44640102-311Xreponame:Cadernos de Saúde Públicainstname:Fundação Oswaldo Cruz (FIOCRUZ)instacron:FIOCRUZenghttps://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5800/12107https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5800/12108Michelle Alessandra de CastroValéria Troncoso BaltarSoraya Sant'Ana de Castro SelemDirce Maria Lobo MarchioniRegina Mara Fisberginfo:eu-repo/semantics/openAccess2024-03-06T15:28:55Zoai:ojs.teste-cadernos.ensp.fiocruz.br:article/5800Revistahttps://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:2024-03-06T13:06:38.086855Cadernos de Saúde Pública - Fundação Oswaldo Cruz (FIOCRUZ)true
dc.title.none.fl_str_mv Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
title Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
spellingShingle Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
Michelle Alessandra de Castro
Food Consumption
Food Habits
Public Health Nutrition
Statistical Factor Analysis
title_short Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
title_full Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
title_fullStr Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
title_full_unstemmed Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
title_sort Empirically derived dietary patterns: interpretability and construct validity according to different factor rotation methods
author Michelle Alessandra de Castro
author_facet Michelle Alessandra de Castro
Valéria Troncoso Baltar
Soraya Sant'Ana de Castro Selem
Dirce Maria Lobo Marchioni
Regina Mara Fisberg
author_role author
author2 Valéria Troncoso Baltar
Soraya Sant'Ana de Castro Selem
Dirce Maria Lobo Marchioni
Regina Mara Fisberg
author2_role author
author
author
author
dc.contributor.author.fl_str_mv Michelle Alessandra de Castro
Valéria Troncoso Baltar
Soraya Sant'Ana de Castro Selem
Dirce Maria Lobo Marchioni
Regina Mara Fisberg
dc.subject.por.fl_str_mv Food Consumption
Food Habits
Public Health Nutrition
Statistical Factor Analysis
topic Food Consumption
Food Habits
Public Health Nutrition
Statistical Factor Analysis
description This study aimed to investigate the effects of factor rotation methods on interpretability and construct validity of dietary patterns derived in a representative sample of 1,102 Brazilian adults. Dietary patterns were derived from exploratory factor analysis. Orthogonal (varimax) and oblique rotations (promax, direct oblimin) were applied. Confirmatory factor analysis assessed construct validity of the dietary patterns derived according to two factor loading cut-offs (≥ |0.20| and ≥ |0.25|). Goodness-of-fit indexes assessed the model fit. Differences in composition and in interpretability of the first pattern were observed between varimax and promax/oblimin at cut-off ≥ |0.20|. At cut-off ≥ |0.25|, these differences were no longer observed. None of the patterns derived at cut-off ≥ |0.20| showed acceptable model fit. At cut-off ≥ |0.25|, the promax rotation produced the best model fit. The effects of factor rotation on dietary patterns differed according to the factor loading cut-off used in exploratory factor analysis.
publishDate 2015
dc.date.none.fl_str_mv 2015-02-01
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/5800
url https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5800
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/5800/12107
https://cadernos.ensp.fiocruz.br/ojs/index.php/csp/article/view/5800/12108
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. 31 No. 2 (2015): February
Cadernos de Saúde Pública; v. 31 n. 2 (2015): Fevereiro
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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