Adaptation, confirmatory factor analysis, and psychometric properties of the Brazilian version of the Repetitive Eating Questionnaire

Marília C Teodoro; Eva M Conceição; Jorge Sinval; Marta de Lourdes; Carmem B Neufeld

doi:10.1002/eat.23943

Adaptation, confirmatory factor analysis, and psychometric properties of the Brazilian version of the Repetitive Eating Questionnaire

Int J Eat Disord. 2023 Apr;56(4):747-757. doi: 10.1002/eat.23943. Epub 2023 Mar 25.

Authors

Marília C Teodoro¹, Eva M Conceição², Jorge Sinval^{3

4

5

6}, Marta de Lourdes², Carmem B Neufeld¹

Affiliations

¹ Psychology Department, Universidade de São Paulo, Ribeirão Preto, São Paulo, Brazil.
² Psychology Department, Universidade do Minho-Braga, Braga, Portugal.
³ Business Research Unit (BRU-IUL), Instituto Universitário de Lisboa (ISCTE-IUL), Lisbon, Portugal.
⁴ Faculty of Philosophy, Sciences and Languages of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil.
⁵ Department of Evidence-Based Health, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo, São Paulo, Brazil.
⁶ William James Center for Research, ISPA-Instituto Universitário, Lisbon, Portugal.

PMID: 36965138
DOI: 10.1002/eat.23943

Abstract

Objective: The Repetitive Eating Questionnaire (Rep(eat)-Q) is a brief self-report measure developed to assess grazing behavior-an understudied problematic eating behavior associated with eating disorder psychopathology and poor weight management. This study aimed to adapt and test the psychometric properties and factor structure of the Rep(eat)-Q in a Brazilian community sample.

Method: We used the International Test Commission guidelines for the adaptation of psychological measures between cultures. Participants were recruited from the community and on a university campus and completed a set of questionnaires including the Rep(eat)-Q, psychological measures, and sociodemographic data.

Results: A total of 718 (86.4% female) completed the Rep(eat)-Q and were eligible for the confirmatory factor analysis (CFA). Only 542 completed the entire survey (Rep(eat)-Q and other psychological measures) and were eligible for the analysis of the validity evidence based on the relations to other variables. CFA revealed support for a two first-order model as originally proposed, however, a hierarchical (i.e., second-order) model is proposed. We found support for second-order scalar invariance across sex. Both first- and second-order internal consistency estimates presented very good evidence. Analysis (n = 542) revealed moderate to strong correlations (≥.58 to .77) between grazing (total score and subscales) and binge eating and other psychological measures, presenting good convergent evidence.

Discussion: This study reports good psychometric properties of the Rep(eat)-Q for the Brazilian community sample.

Public significance: Grazing is a problematic eating behavior and the Rep(eat)-Q is one of the measures to assess grazing. The article aimed to adapt and test the psychometric properties of the Rep(eat)-Q in a Brazilian community sample. The results support a two-factor structure and suggest that the Rep(eat)-Q possesses good psychometric properties to be used with the Brazilian populations.

Keywords: adaptation; assessment; grazing; psychometric properties; repetitive eating.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Adolescent
Adult
Aged
Anxiety
Body Mass Index
Brazil
Bulimia
Depression
Factor Analysis, Statistical*
Feeding and Eating Disorders* / complications
Feeding and Eating Disorders* / diagnosis
Feeding and Eating Disorders* / psychology
Female
Humans
Male
Middle Aged
Obesity
Psychometrics*
Reproducibility of Results
Self Report
Sociodemographic Factors
Stress, Psychological
Surveys and Questionnaires*
Young Adult