Psychometric Properties of Various Factorial Models of the ORTO-15 Tested With Brazilian Respondents.

Autor:	Donofre GS; Graduate Program in Food, Nutrition and Food Engineering. School of Pharmaceutical Sciences of São Paulo State University (UNESP), Araraquara/SP, Brazil., Japur CC; Department of Health Sciences. Ribeirão Preto Medical School. University of São Paulo (USP). Ribeirão Preto/SP, Brazil., Laus MF; Nutrition Course. University of Ribeirão Preto (UNAERP). Ribeirão Preto/SP, Brazil.; Department of Psychology. Faculty of Philosophy, Sciences and Letters of Ribeirao Preto, University of Sao Paulo (USP). Ribeirão Preto/SP, Brazil., Alvarenga MDS; Graduate Program in Public health Nutrition. School of Public Health. University of São Paulo (USP). São Paulo/SP, Brazil., Silva WRD; Graduate Program in Food, Nutrition and Food Engineering. School of Pharmaceutical Sciences of São Paulo State University (UNESP), Araraquara/SP, Brazil.
Jazyk:	angličtina
Zdroj:	Perceptual and motor skills [Percept Mot Skills] 2024 Jul 21, pp. 315125241267134. Date of Electronic Publication: 2024 Jul 21.
DOI:	10.1177/00315125241267134
Abstrakt:	The ORTO-15 is a commonly used screening instrument for symptoms of Orthorexia Nervosa (ON), an obsessive overconcern with healthy eating. However, its limitations have been evidenced in several published factorial models. We analyzed the psychometric properties of seven different ORTO-15 factorial models using data from Brazilian adult participants ( n = 1455; 71.4% women; M age = 29.5, SD = 8.9 years) from the country's five macro-regions who answered online questions for sample characterization and completed the Portuguese version of the ORTO-15 containing 15 items. We tested the fit of each model separately, analyzing data for men and women with separate confirmatory factor analysis, and using the Weighted Least Squares Mean and Variance Adjusted estimation method and goodness-of-fit indices. We also calculated the average variance extracted and the alpha ordinal and omega coefficients to analyze the convergent validity and reliability of the factors. None of the models tested presented adequate properties of validity and reliability. Although we found some acceptable reliability coefficients, they do not guarantee the validity of the data. Future investigators should be cautious when choosing the ORTO-15 for ON screening. Competing Interests: Declaration of Conflicting InterestsThe author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Databáze:	MEDLINE
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