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. 2018 Jan 10;13(1):e0190722.
doi: 10.1371/journal.pone.0190722. eCollection 2018.

Adaptation and validation of the Spanish version of the ORTO-15 questionnaire for the diagnosis of orthorexia nervosa

María Laura Parra-Fernandez  1 , Teresa Rodríguez-Cano  2 , María Dolores Onieva-Zafra  1 , Maria José Perez-Haro  3 , Víctor Casero-Alonso  3 , Juan Carlos Muñoz Camargo  1 , Blanca Notario-Pacheco  4
Affiliations

Adaptation and validation of the Spanish version of the ORTO-15 questionnaire for the diagnosis of orthorexia nervosa

María Laura Parra-Fernandez et al. PLoS One. .

Abstract

The aim of this study was the validation and analysis of the psychometric properties of a Spanish translation of the ORTO-15 questionnaire; an instrument designed to assess orthorexia nervosa behavior. Four hundred and fifty-four Spanish university students (65% women) aged between 18 and 51 years (M = 21.48 ± 0.31) completed the Spanish version of ORTO-15 and the Eating Disorders Inventory-2 (EDI-2). The Principal Component Analysis suggested a three-factor structure for the abbreviated 11-item version of the instrument. The internal consistency of the measurement was adequate (Cronbach's alpha = 0.80). The proposed test demonstrated a good predictive capacity at a threshold value of <25 (efficiency 84%, sensitivity 75% and specificity 84%). Our results support the psychometric properties of the proposed Spanish shortened-version of the ORTO-15 as being a reliable tool for assessing orthorexia nervosa. Its use is expected to greatly contribute to a better understanding of the impact of this disorder in Spain.

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Conflict of interest statement

Competing Interests: The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Scree plot.
Fig 2
Fig 2. Parallel analysis of the ORTO-11.
See this image and copyright information in PMC

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