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Psychometric properties of the modified Yale Food Addiction Scale 2.0 in a large Brazilian sample

Research output: Contribution to journalArticlepeer-review

Paulo R Nunes-Neto, Cristiano A Köhler, Felipe B Schuch, João Quevedo, Marco Solmi, Andrea Murru, Eduard Vieta, Michael Maes, Brendon Stubbs, André F Carvalho

Original languageEnglish
JournalRevista Brasileira de Psiquiatria
Early online date11 Jun 2018
DOIs
Accepted/In press5 Dec 2017
E-pub ahead of print11 Jun 2018

King's Authors

Abstract

OBJECTIVE: The field of food addiction has attracted growing research attention. The modified Yale Food Addiction Scale 2.0 (mYFAS 2.0) is a screening tool based on DSM-5 criteria for substance use disorders. However, there is no validated instrument to assess food addiction.

METHODS: The mYFAS 2.0 has been transculturally adapted to Brazilian Portuguese. The data for this study was obtained through an anonymous web-based research platform: participants provided sociodemographic data and answered Brazilian versions of the the mYFAS 2.0 and the Barratt Impulsivity Scale (BIS-11). Analysis included an assessment of the Brazilian mYFAS 2.0's internal consistency reliability, factor structure, and convergent validity in relation to BIS-11 scores.

RESULTS: Overall, 7,639 participants were included (71.3% females; age: 27.2±7.9 years). The Brazilian mYFAS 2.0 had adequate internal consistency reliability (Cronbach's alpha = 0.89). A single factor solution yielded the best goodness-of-fit parameters for both the continuous and categorical version of the mYFAS 2.0 in confirmatory factor analysis. In addition, mYFAS 2.0 correlated with BIS-11 total scores (Spearman's rho = 0.26, p < 0.001) and subscores.

CONCLUSION: The Brazilian mYFAS 2.0 demonstrated adequate psychometric properties in our sample; however, future studies should further evaluate its discriminant validity.

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