Psychometric Properties of the Eating Disorder Inventory-3 (EDI-3) in Chilean Youth

Paula Lizana-Calderón; Claudia Cruzat-Mandich; Fernanda Díaz-Castrillón; Jesús M Alvarado; Emilio J Compte

doi:10.3389/fpsyg.2022.806563

Psychometric Properties of the Eating Disorder Inventory-3 (EDI-3) in Chilean Youth

Front Psychol. 2022 Mar 1:13:806563. doi: 10.3389/fpsyg.2022.806563. eCollection 2022.

Authors

Paula Lizana-Calderón¹, Claudia Cruzat-Mandich¹, Fernanda Díaz-Castrillón¹, Jesús M Alvarado², Emilio J Compte¹

Affiliations

¹ Centro de Estudios de la Conducta Alimentaria (CECA), Escuela de Psicología, Universidad Adolfo Ibáñez, Santiago, Chile.
² Facultad de Psicología, Universidad Complutense de Madrid, Madrid, Spain.

Abstract

The aim of this study was to analyze the psychometric properties of the Eating Disorder Inventory (EDI)-3 test to evaluate eating disorders in young Chilean population. Methods: The sample consisted of 1,091 Chilean adolescents and young people (i.e., 476 men and 615 women) between 15 and 28 years old, from the metropolitan region, and four regions from the coast and south-central zone of the country. The reliability and factorial structure of the instrument were analyzed, replicating the confirmatory factor analyses of Brookings et al. (2020), evaluating four additional models that included bifactor exploratory structural equation modeling (ESEM), bifactor, and two-bifactor. Results: A majority of the subscales presented alphas and omegas equal to or greater than 0.70, with the exception of asceticism (α = 0.543, ω = 0.552) and interpersonal alienation (α = 0.684, ω = 0.695) scales, which are consistent with the values of the Spanish and Mexican non-clinical samples. The best fit indices were obtained by the ESEM two-bifactor model, with twelve specific factors corresponding to the EDI-3 subscales and two general orthogonal factors (i.e., risk subscales and psychological subscales), consistently with the theoretical basis.

Keywords: Eating Disorder Inventory-3 (EDI-3); bifactor exploratory structural equation modeling (ESEM); eating disorders (ED); eating disorders–diagnosis; psychometric procedures; therapy.