0081/2018 - Validade da estrutura fatorial da escala de versão brasileira do Food Choice Questionnaire. Validity of the factorial structure of the Brazilian version scale of the Food Choice Questionnaire.
Este estudo examinou a estrutura dimensional e a confiabilidade da versão em português brasileiro do Food Choice Questionnaire (FCQ) de 36 itens, instrumento utilizado para medir a importância dos motivos que levam às escolhas alimentares. A amostra incluiu 502 adultos. Utilizou-se análises fatoriais confirmatórias (AFC) para avaliar a estrutura configural (dimensionalidade) e métrica (magnitude de cargas fatoriais, correlações residuais e validade fatorial discriminante). A avaliação de consistência interna usou o coeficiente ômega (W); a reprodutibilidade temporal usou o coeficiente Kappa com ponderação quadrática (k) em uma amostra separada de 41 indivíduos. A AFC final corrobora a estrutura original de 9 fatores e mostra altas cargas fatoriais (li > 0,80 em 34 itens); duas correlações residuais (r(i2-i3) = 0,773 e r(i16?i17) = 0,853); e correlações fatoriais indicando validade fatorial discriminante (f < 0,80). Quanto à confiabilidade, há adequada consistência interna (W = 0,877 a 0,968) e boa reprodutibilidade teste-reteste indicando estabilidade temporal (k = 0,768 a 0,917). Conclui-se que a versão do FCQ possui boas propriedades configural e métricas, já podendo ser recomendada para uso no Brasil na sua presente forma.
Palavras-chave:
Estudos de validação. Comparação transcultural. Questionários. Preferências alimentares. Comportamento alimentar.
Abstract:
This study examines the dimensional structure and reliability of the 36-item Food Choice Questionnaire (FCQ) Brazilian Portuguese version, an instrument used to measure the importance of motives conducive to food choices. The sample includes 502 adults. Confirmatory factorial analyzes (CFA) were used to evaluate the instrument’s configural (dimensionality) and metric (magnitude of factorial loads, residual correlations and factorial discriminatory validity) structures. Internal consistency evaluation used the Omega coefficient (W); temporal reproducibility used the Kappa coefficient with quadratic weighting (k) in a separate sample of 41 subjects. The final CFA corroborates a 9-factor original structure and shows high factorial loadings (li > 0,80 in 34 items); two residual correlations (r(i2-i3) = 0,773 e r(i16‑i17) = 0,853); and factorial correlations indicating factor-based discriminant validity (f < 0,80). Regarding reliability, there is adequate internal consistency (W = 0.877 to 0.968), and good test-retest reproducibility indicating temporal stability (k = 0.768 to 0.917). It is concluded that the FCQ version has good configurable and metrics properties, and may be recommended for use in Brazil in its present form.
Validity of the factorial structure of the Brazilian version scale of the Food Choice Questionnaire.
Resumo (abstract):
This study examines the dimensional structure and reliability of the 36-item Food Choice Questionnaire (FCQ) Brazilian Portuguese version, an instrument used to measure the importance of motives conducive to food choices. The sample includes 502 adults. Confirmatory factorial analyzes (CFA) were used to evaluate the instrument’s configural (dimensionality) and metric (magnitude of factorial loads, residual correlations and factorial discriminatory validity) structures. Internal consistency evaluation used the Omega coefficient (W); temporal reproducibility used the Kappa coefficient with quadratic weighting (k) in a separate sample of 41 subjects. The final CFA corroborates a 9-factor original structure and shows high factorial loadings (li > 0,80 in 34 items); two residual correlations (r(i2-i3) = 0,773 e r(i16‑i17) = 0,853); and factorial correlations indicating factor-based discriminant validity (f < 0,80). Regarding reliability, there is adequate internal consistency (W = 0.877 to 0.968), and good test-retest reproducibility indicating temporal stability (k = 0.768 to 0.917). It is concluded that the FCQ version has good configurable and metrics properties, and may be recommended for use in Brazil in its present form.
Heitor, Sara Franco Diniz, Reichenheim, M.E, Ferreira, Julia Elba de Souza, Castro, S.S. Validade da estrutura fatorial da escala de versão brasileira do Food Choice Questionnaire.. Cien Saude Colet [periódico na internet] (2018/fev). [Citado em 22/12/2024].
Está disponível em: http://cienciaesaudecoletiva.com.br/artigos/validade-da-estrutura-fatorial-da-escala-de-versao-brasileira-do-food-choice-questionnaire/16614?id=16614
