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. 2018 Dec;23(6):745-752.
doi: 10.1007/s40519-018-0573-3. Epub 2018 Sep 8.

Structural validation of ORTO-11-ES for the diagnosis of orthorexia nervosa, Spanish version

María Laura Parra-Fernandez  1 , Teresa Rodríguez-Cano  2 , Maria José Perez-Haro  3 , María Dolores Onieva-Zafra  4 , Elia Fernandez-Martinez  1 , Blanca Notario-Pacheco  5
Affiliations

Structural validation of ORTO-11-ES for the diagnosis of orthorexia nervosa, Spanish version

María Laura Parra-Fernandez et al. Eat Weight Disord. 2018 Dec.

Abstract

Purpose: The ORTO-11-ES questionnaire is a tool to assess the pathological obsession displayed by some individuals regarding healthy eating. The aims of this study were (1) to confirm the factor structure of the Spanish version of ORTO-11-ES using confirmatory factor analysis (CFA) and (2) to examine the possible association between the ORTO-11-ES score, gender and body mass index (BMI).

Methods: The sample comprised 492 students from the University of Castilla la Mancha, Spain. Of these, 280 were women (56.9%). Participants were surveyed using the ORTO-11-ES questionnaire.

Results: The confirmatory factor analysis (CFA) supported the 11 elements and 3 domains of this tool as the better fitting model; for the Comparative Fit Index (CFI) and the Tucker-Lewis Index (TLI), the values were 0.94 and 0.91, respectively, and the Root Mean-Square Error of Approximation (RMSEA) was 0.058. The tendency towards orthorexic behavior is more associated with the female gender. The BMI had no influence on the tendency for ON.

Conclusions: This study is the first attempt to confirm the three-factor structure of a Spanish version of the ORTO-15 questionnaire. These findings suggest that the ORTO-11-ES may be a valuable tool for identifying subjects with specific eating behavior patterns. This information may be useful for health professionals involved in the research, development and implementation of interventions catered to individuals suffering from this eating disorder.

Level of evidence: Level V, descriptive cross-sectional study.

Keywords: Confirmatory factor analysis; ORTO-11-ES; Orthorexia nervosa; University students.

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Conflict of interest statement

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

All procedures performed in studies involving human participants were 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.

Informed consent

Informed consent was obtained from all individual participants included in the study.

Figures

Fig. 1
Fig. 1
ORTO-11 ES (1-factor structure)
Fig. 2
Fig. 2
ORTO-11 ES (3-factor structure)
See this image and copyright information in PMC

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