Abstract
This study examines the dimensional structure and reliability of the 36-item Food Choice Questionnaire (FCQ) in a Brazilian Portuguese version, an instrument used to measure the importance of motives behind food choices. The sample includes 502 adults. Confirmatory factorial analysis (CFA) were used to evaluate the configural (dimensionality) and metric (magnitude of factorial loadings, residual correlations and factorial discriminatory validity) structures of the instrument. Internal consistency evaluation used the Omega coefficient (Ω); temporal reproducibility used the Kappa coefficient with quadratic weighting (κ) in a separate sample of 41 subjects. The final CFA corroborates the 9-factor original structure and shows high factorial loadings (λi > 0.80 in 34 items); two residual correlations (r(i2-i3) = 0.773 and r(i16 i17) = 0.853); and factorial correlations indicating factor discriminant validity (φ < 0.80). Regarding reliability, there is adequate internal consistency (Ω = 0.877 to 0.968), and good test-retest reproducibility indicating temporal stability (κ = 0.768 to 0.917). It can be concluded that the FCQ version has good configural and metric properties, and may be recommended for use in Brazil in its present form.
Highlights
Food choices are based on many factors, such as economic, sociocultural, ideological, psychological and biological factors[1,2]
This study examines the dimensional structure and reliability of the 36-item Food Choice Questionnaire (FCQ) in a Brazilian Portuguese version, an instrument used to measure the importance of motives behind food choices
FCQ is a tool that evaluates the importance attached by individuals to food choices and has been widely used in epidemiological researches
Summary
Food choices are based on many factors, such as economic, sociocultural, ideological, psychological and biological factors[1,2]. The possible relationship between these choices and their health effects, whether unfavorable or protective, directs public policies in the area of food and nutrition[3,4]. The consumption of these types of food remains high in Brazil[5]. To create public policies in the area of food and nutrition only based on the thought that food choices are motivated by health concerns seems limited[6], and other needs may underlie these options[2,7,8]. Being a vegetarian for ethical or political values[9], reducing the consumption of meat and prioritizing seasonal fruits and vegetables to minimize the environmental impact[8], and choosing food that is accessible and at a reduced price may influence food choices[7]
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