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      Escala de Fenotipos de Comportamiento Alimentario (EFCA), análisis factorial confirmatorio y propiedades psicométricas Translated title: Scale of Eating Behavior Phenotypes (EFCA), confirmatory factor analysis and psychometric properties

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          Abstract

          Resumen Introducción: el aumento de peso depende de múltiples factores mediadores modificables, incluido el fenotipo del comportamiento ingestivo. La Escala de Fenotipos de Comportamiento Alimentario (EFCA) es un cuestionario autoadministrado, diseñado como herramienta de uso clínico para caracterizar diferentes subfenotipos de comportamiento ingestivo: hedónico, compulsivo, emocional, desorganizado e hiperfágico. Objetivos: el objetivo de este estudio es validar las propiedades psicométricas de la Escala de Fenotipos de Comportamiento Alimentario (EFCA) y analizar la estabilidad del constructo y su validez externa. Materiales y métodos: trescientos participantes adultos completaron una encuesta autoadministrada, desarrollada para identificar fenotipos de conducta alimentaria (EFCA). Se realizó un análisis factorial confirmatorio, se evaluó la consistencia interna mediante el coeficiente alfa de Cronbach y se determinó la validez concurrente mediante el método de correlación de Pearson entre EFCA e IMC. Resultados: la escala EFCA y las subescalas mostraron una aceptable consistencia interna (α > 0,70). El análisis factorial confirmatorio mostró un buen ajuste de los datos a la estructura propuesta (SBχ922 = 155, p < 0,05; CFI = 0,97, TLI = 0,96, RMSEA = 0,05, SRMR = 0,04). Se encontró una correlación positiva y estadísticamente significativa entre el IMC y cada subescala y la puntuación total de la escala. Conclusiones: la EFCA y sus subescalas son un instrumento válido para evaluar fenotipos alimentarios en adultos. La estructura de cinco componentes muestra una alta estabilidad y resultados consistentes en relación a un estudio previo realizado con una muestra de pacientes con exceso de peso.

          Translated abstract

          Abstract Introduction: weight gain depends on multiple modifiable mediating factors, including ingestive behavior phenotype. The Eating Behavior Phenotypes Scale (EFCA) is a self-administered questionnaire designed as a tool for clinical use to characterize different sub-phenotypes of ingestive behavior: hedonic, compulsive, emotional grazing, disorganized and hyperphagic. Objectives: the aim of this study is to validate the psychometric properties of the Eating Behavior Phenotypes Scale (EFCA), to analyze the stability of the construct and its external validity. Materials and methods: three hundred adult participants completed a self-administered survey developed to identify eating behavior phenotypes (EFCA). A confirmatory factor analysis was performed, internal consistency was evaluated using Cronbach's alpha coefficient, and concurrent validity was assessed using Pearson's correlation method between EFCA and BMI. Results: the EFCA scale and the subscales showed an acceptable internal consistency (α > 0.70). The confirmatory factor analysis showed a good adjustment of the data to the proposed structure (SBχ922 = 155, p < 0.05; CFI = 0.97; TLI = 0.96; RMSEA = 0.05; SRMR = 0.04). A positive and statistically significant correlation was found between BMI and both each subscale and total scale scores. Conclusions: EFCA and its subscales are a valid instrument to assess eating phenotypes in adults. The five-component structure shows high stability and consistent results in relation to a previous study carried out with a sample of obese patients.

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          The moderator-mediator variable distinction in social psychological research: conceptual, strategic, and statistical considerations.

          In this article, we attempt to distinguish between the properties of moderator and mediator variables at a number of levels. First, we seek to make theorists and researchers aware of the importance of not using the terms moderator and mediator interchangeably by carefully elaborating, both conceptually and strategically, the many ways in which moderators and mediators differ. We then go beyond this largely pedagogical function and delineate the conceptual and strategic implications of making use of such distinctions with regard to a wide range of phenomena, including control and stress, attitudes, and personality traits. We also provide a specific compendium of analytic procedures appropriate for making the most effective use of the moderator and mediator distinction, both separately and in terms of a broader causal system that includes both moderators and mediators.
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            Principles and Practice of Structural Equation Modeling, Fourth Edition

            Emphasizing concepts and rationale over mathematical minutiae, this is the most widely used, complete, and accessible structural equation modeling (SEM) text. Continuing the tradition of using real data examples from a variety of disciplines, the significantly revised fourth edition incorporates recent developments such as Pearl's graphing theory and the structural causal model (SCM), measurement invariance, and more. Readers gain a comprehensive understanding of all phases of SEM, from data collection and screening to the interpretation and reporting of the results. Learning is enhanced by exercises with answers, rules to remember, and topic boxes. The companion website supplies data, syntax, and output for the book's examples--now including files for Amos, EQS, LISREL, Mplus, Stata, and R (lavaan).<br><br> New to This Edition<br> *Extensively revised to cover important new topics: Pearl's graphing theory and the SCM, causal inference frameworks, conditional process modeling, path models for longitudinal data, item response theory, and more.<br> *Chapters on best practices in all stages of SEM, measurement invariance in confirmatory factor analysis, and significance testing issues and bootstrapping.<br> *Expanded coverage of psychometrics.<br> *Additional computer tools: online files for all detailed examples, previously provided in EQS, LISREL, and Mplus, are now also given in Amos, Stata, and R (lavaan).<br> *Reorganized to cover the specification, identification, and analysis of observed variable models separately from latent variable models.<br><br> Pedagogical Features<br> *Exercises with answers, plus end-of-chapter annotated lists of further reading.<br> *Real examples of troublesome data, demonstrating how to handle typical problems in analyses.<br> *Topic boxes on specialized issues, such as causes of nonpositive definite correlations.<br> *Boxed rules to remember.<br> *Website promoting a learn-by-doing approach, including syntax and data files for six widely used SEM computer tools.
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              The three-factor eating questionnaire to measure dietary restraint, disinhibition and hunger

              This report describes the construction of a questionnaire to measure three dimensions of human eating behavior. The first step was a collation of items from two existing questionnaires that measure the related concepts of 'restrained eating' and 'latent obesity', to which were added items newly written to elucidate these concepts. This version was administered to several populations selected to include persons who exhibited the spectrum from extreme dietary restraint to extreme lack of restraint. The resulting responses were factor analyzed and the resulting factor structure was used to revise the questionnaire. This process was then repeated: administration of the revised questionnaire to groups representing extremes of dietary restraint, factor analysis of the results and questionnaire revision. Three stable factors emerged: (1) 'cognitive restraint of eating', (2) 'disinhibition' and (3) 'hunger'. The new 51-item questionnaire measuring these factors is presented.
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                Author and article information

                Journal
                nh
                Nutrición Hospitalaria
                Nutr. Hosp.
                Grupo Arán (Madrid, Madrid, Spain )
                0212-1611
                1699-5198
                April 2022
                : 39
                : 2
                : 405-410
                Affiliations
                [1] Ciudad Autónoma de Buenos Aires orgnameCentro Dra. Katz, Soler Argentina
                [2] orgnameConsejo Nacional de Investigaciones Científicas y Técnicas (CONICET) Argentina
                Article
                S0212-16112022000200021 S0212-1611(22)03900200021
                10.20960/nh.03849
                a3cd4f9d-21fb-4277-87ad-ffb8930d6a10

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 28 August 2021
                : 03 November 2021
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 32, Pages: 6
                Product

                SciELO Spain

                Categories
                Trabajos Originales

                Precision medicine,Comportamiento alimentario,Obesidad,Fenotipos,Estilos de ingesta,Medicina de precisión,Eating behavior,Obesity,Phenotypes,Eating styles

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