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

Castro, Michelle Alessandra de; Baltar, Valéria Troncoso; Selem, Soraya Sant'Ana de Castro; Marchioni, Dirce Maria Lobo; Fisberg, Regina Mara

doi:10.1590/0102-311x00070814

Cited by 34 publications

(29 citation statements)

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“…Systematic reviews on the subject have criticized studies for the large numbers of steps that depend on researchers' choices and for a failure to state explicitly the criteria used at those stages 5,50 . On the other hand, little has been done in Brazil to problematize the choice of multivariate analysis as a method for defining dietary patterns, the exception being Castro et al 51 . The techniques most often used (factorial analysis and principal component analysis) presuppose the use of continuous variables.…”

Section: Discussionmentioning

confidence: 99%

Eating patterns in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil): an exploratory analysis

et al. 2016

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The food consumption of 15,071 public employees was analyzed in six Brazilian cities participating in the baseline for Brazilian Longitudinal Study of Adult Health (ELSA-Brasil, 2008-2010) with the aim of identifying eating patterns and their relationship to socio-demographic variables. Multiple correspondence and cluster analysis were applied. Four patterns were identified, with their respective frequencies: "traditional" (48%); "fruits and vegetables" (25%); "pastry shop" (24%); and "diet/light" (5%) The "traditional" and "pastry shop" patterns were more frequent among men, younger individuals, and those with less schooling. "Fruits and vegetables" and "diet/light" were more frequent in women, older individuals, and those with more schooling. Our findings show the inclusion of new items in the "traditional" pattern and the appearance of the "low sugar/low fat" pattern among the eating habits of Brazilian workers, and signal socio-demographic and regional differences.

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Section: Discussionmentioning

confidence: 99%

Eating patterns in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil): an exploratory analysis

et al. 2016

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“…We illustrated the application of PCA and FA in the nutrition field by using both multivariate methods on a matrix of 34 variables expressing the mean food intake (in grams/ day) of 1,102 individuals (aged 20 years and older) who responded to two non-consecutive 24-hour dietary recalls (24HDR) in a population-based study 11 . The study had two different objectives: to describe only the multidimensional data in PCA and the derivation of dietary patterns in FA.…”

Section: Study Population and Data Managementmentioning

confidence: 99%

“…The study had two different objectives: to describe only the multidimensional data in PCA and the derivation of dietary patterns in FA. Castro et al 11 present a detailed description of the 34 food groups and their composition.…”

Section: Study Population and Data Managementmentioning

confidence: 99%

Principal Component Analysis and Factor Analysis: differences and similarities in Nutritional Epidemiology application

Santos

Gorgulho

Castro

et al. 2019

Rev. bras. epidemiol.

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Introduction: Statistical methods such as Principal Component Analysis (PCA) and Factor Analysis (FA) are increasingly popular in Nutritional Epidemiology studies. However, misunderstandings regarding the choice and application of these methods have been observed. Objectives: This study aims to compare and present the main differences and similarities between FA and PCA, focusing on their applicability to nutritional studies. Methods: PCA and FA were applied on a matrix of 34 variables expressing the mean food intake of 1,102 individuals from a population-based study. Results: Two factors were extracted and, together, they explained 57.66% of the common variance of food group variables, while five components were extracted, explaining 26.25% of the total variance of food group variables. Among the main differences of these two methods are: normality assumption, matrices of variance-covariance/correlation and its explained variance, factorial scores, and associated error. The similarities are: both analyses are used for data reduction, the sample size usually needs to be big, correlated data, and they are based on matrices of variance-covariance. Conclusion: PCA and FA should not be treated as equal statistical methods, given that the theoretical rationale and assumptions for using these methods as well as the interpretation of results are different.

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“…Cattell, 1966;Preacher, Zhang, Kim, & Mels, 2013). Our results gave us a strong evidence pointing to a two factors solution (Castro et al, 2015). The labels were created based on the ASQ:SE background and the items content.…”

Section: Discussionmentioning

confidence: 53%

“…The extraction method was based on principal components and the rotation technique was Varimax. The varimax is a type of orthogonal rotation that attempts to maximize the variance of squared loadings on a factor to reduce the cross-loadings of the variables, leading to uncorrelated simple factor structures (Castro, Baltar, Selem, Marchioni, & Fisberg, 2015) and it was chosen because this is the most frequent rotation method applied in empirical research.…”

Section: Discussionmentioning

confidence: 99%

Use of the Ages and Stages Questionnaires to Establish Indicators of Child Development in Public Daycare Centers in Rio De Janeiro, Brazil

ANUNCIACAO¹

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Anunciação, Luis; Landeira-Fernandez, Jesus (Advisor). Use of the Ages and Stages Questionnaires to establish indicators of child development in public daycare centers in Rio de Janeiro, Brazil. Rio de Janeiro, 2018. 126p. Tese de Doutorado -Departamento de Psicologia. Pontifícia Universidade Católica do Rio de Janeiro.From 2010 to 2012, the city of Rio de Janeiro initiated a large-scale project to evaluate the development of children who were enrolled in daycare centers and public preschools. The evaluation of child development was performed annually, with an average of 60,000 children in ~80% of the daycare centers and public preschools in the city. After receiving specific training, professionals at each institution (e.g., teachers and caregivers) applied the Ages and Stages Questionnaires (ASQ-3 and ASQ:SE) to screen for risk factors (e.g., developmental delays) with regard to the major markers and milestones of child development.However, in the Brazilian context, there is a lack of studies that have investigated the psychometric properties of the Brazilian version of the ASQ:SE. Moreover, a dearth of studies has discussed the results of both the ASQ:BR and ASQ:SE with regard to longitudinal assessments, gender differences, and incorporation of the statistical results into public policies. That said, the present thesis had the following objectives: (1) to investigate the main psychometric properties of the ASQ:SE using both Classical Test Theory (CTT) methodology and Item Response Theory (IRT) and (2) to present an overview of child development in daycare services using the data that were gathered from this longitudinal project. Thus, this thesis comprises five articles in which the following studies were conducted. Initially, based on CTT, the factor structure of the ASQ:SE was estimated using Cronbach's , and preliminary cutoff points were computed, based on means and standard deviations.The second article extended investigation of the factor structure of the ASQ:SE and in the third article, a multidimensional IRT model was used for two purposes: (i) to confirm the dimensionality of all scales of the ASQ:SE and (ii) to verify its item characteristics. In the fourth and fifth article, the focus partially shifted from psychometric properties to the preliminary results of a longitudinal evaluation of children who were assessed over two or three consecutive years. The overall results provide evidence of the validity, reliability, and utility of the ASQ:SE and suggest PUC-Rio -Certificação Digital Nº 1412331/CA that children who are enrolled in Brazilian/Rio de Janeiro's public daycare centers, despite environmental adversity, are not at risk of serious developmental delays.

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

Cited by 34 publications

References 50 publications

Eating patterns in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil): an exploratory analysis

Eating patterns in the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil): an exploratory analysis

Principal Component Analysis and Factor Analysis: differences and similarities in Nutritional Epidemiology application

Use of the Ages and Stages Questionnaires to Establish Indicators of Child Development in Public Daycare Centers in Rio De Janeiro, Brazil

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