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Reliability of the Brazilian version of the questionnaire on eating and weight patterns-5 (QEWP-5)

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Eating and Weight Disorders - Studies on Anorexia, Bulimia and Obesity Aims and scope Submit manuscript

Abstract

Purpose

The Questionnaire on Eating and Weight Patterns-5 (QEWP-5) is a self-report instrument developed to screen individuals for binge eating disorder (BED) and bulimia nervosa (BN) as diagnosed by the DSM-5. This instrument was cross-culturally adapted for the Brazilian Portuguese and well understood by the target sample. The present study aimed to assess the test–retest reliability of the Brazilian version of QEWP-5 in a sample of undergraduate students from Dietitian and Psychology courses.

Methods

The Brazilian version of QEWP-5 was administered to a sample of 345 male and female undergraduate students, from dietitian (n = 179) and psychology (n = 166) courses. The instrument was applied twice with a time interval of 2 weeks between the applications. The kappa coefficient was used to assess the temporal stability of the questionnaire in the screening of BED and BN.

Results

Overall, the kappa coefficient for the screening of BED was .48, and for the screening of BN was .71. In the dietitian course, the temporal stability was .60 (for the assessment of BED) and .80 (for BN). In the psychology course, the kappa values for the assessment of BED and BN were .27 and .60, respectively. All values were statistically significant (p < .001).

Conclusion

In general, the stability of the Brazilian version of QEWP-5 was considered moderate to assess BED and substantial for the screening of BN in undergraduate students. Stratifying by course, the questionnaire had higher stability for the assessment of BED and BN in dietitian students.

Level of evidence

Level V, descriptive study.

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Acknowledgements

This article is based on the following dissertation: Questionnaire on Eating and Weight Patterns-5 – QEWP-5 (Questionário sobre Padrões de Alimentação e Peso-5): Translation, cross-cultural adaptation and reliability. Dissertation in preparation. Federal University of Rio de Janeiro (UFRJ), Josué de Castro Nutrition Institute (INJC), Department of Social and Applied Nutrition (DNSA), Rio de Janeiro (RJ), Brazil.

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Authors and Affiliations

  1. Josué de Castro Nutrition Institute (INJC), Department of Social and Applied Nutrition (DNSA), Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, RJ, Brazil

    Carlos Eduardo Ferreira de Moraes, Carla Mourilhe & Glória Valéria da Veiga

  2. Psychiatry Institute (IPUB), Group of Obesity and Eating Disorders (GOTA), Federal University of Rio de Janeiro, Avenida Venceslau Brás, 71 fundos, Campus Praia Vermelha, Botafogo, Rio de Janeiro, 22290-140, RJ, Brazil

    Carlos Eduardo Ferreira de Moraes, José Carlos Appolinário, Carla Mourilhe & Sílvia Regina de Freitas

  3. State Institute of Diabetes e Endocrinology (IEDE), Rio de Janeiro, RJ, Brazil

    Sílvia Regina de Freitas

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  1. Carlos Eduardo Ferreira de Moraes
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  2. José Carlos Appolinário
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  3. Carla Mourilhe
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  4. Sílvia Regina de Freitas
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  5. Glória Valéria da Veiga
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Correspondence to Carlos Eduardo Ferreira de Moraes.

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Conflict of interest

JCA received research grants, consultancy fees, and advisory board fees from Shire Pharmaceuticals.

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All procedures performed in the study were conducted in accordance with the ethical standards of the institutional and/ or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Ethics Committee from Institute of Psychiatry from the Federal University of Rio de Janeiro (protocol no. 89082418.6.0000.5263).

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de Moraes, C.E.F., Appolinário, J.C., Mourilhe, C. et al. Reliability of the Brazilian version of the questionnaire on eating and weight patterns-5 (QEWP-5). Eat Weight Disord 26, 2463–2470 (2021). https://doi.org/10.1007/s40519-020-01072-6

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