Italian adaptation of the Düsseldorf Orthorexia Scale (I-DOS): psychometric properties and prevalence of orthorexia nervosa among an Italian sample.

Content Provider	Europe PMC
Author	Cerolini, Silvia Vacca, Mariacarolina Zagaria, Andrea Donini, Lorenzo Maria Barbaranelli, Claudio Lombardo, Caterina
Abstract	PurposeOrthorexia Nervosa (ON) is described as an extreme level of preoccupation around healthy eating, accompanied by restrictive eating behaviors. During the years, different assessment instruments have been developed. The aim of the study is to adapt into Italian the Düsseldorf Orthorexia Scale (I-DOS) and to test its psychometric properties.MethodA total sample of 422 volunteer university students (mean age = 20.70 ± 3.44, women 71.8%) completed a group of self-report questionnaires in large group sessions during their lecture time. The scales assessed ON (the I-DOS and the Orhto-15), disordered eating (Disordered Eating Questionnaire, DEQ), depressive symptoms (Beck Depression Inventory-II, BDI-II), obsessive and compulsive symptoms (Obsessive Compulsive Inventory-Revised, OCI-R), and self-reported height and weight.ResultsThe fit of the unidimensional structure and reliability of the I-DOS was tested trough Confirmatory Factor Analysis (CFA) as well as its criterion validity computing correlation coefficients among Ortho-15, DEQ, BDI-II, OCI-R, BMI. Analyses confirmed the unidimensional structure of the I-DOS with acceptable or great fit indices (CFI = 0.984; TLI = 0.978; SRMR = 0.043; RMSEA = 0.076) and the strong internal consistency (α = 0.888). The correlations path supported the criterion validity of the scale. The estimated total prevalence of both ON and ON risk was 8.1%.ConclusionsThis 10-item scale appears to be a valid and reliable measure to assess orthorexic behaviors and attitudes.Level of evidenceLevel V, descriptive cross-sectional study.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC9079031&blobtype=pdf
ISSN	11244909
Journal	Eating and Weight Disorders [Eat Weight Disord]
Volume Number	27
DOI	10.1007/s40519-021-01278-2
PubMed Central reference number	PMC9079031
Issue Number	4
PubMed reference number	34351591
e-ISSN	15901262
Language	English
Publisher	Springer International Publishing
Publisher Date	2021-08-05
Publisher Place	Gewerbestrasse 11, Cham, Ch 6330, Switzerland
Access Restriction	Open
Rights License	Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/. © The Author(s) 2021
Subject Keyword	Orthorexia Healthy eating Scale validation Confirmatory analysis Psychometric properties
Content Type	Text
Resource Type	Article
Subject	Clinical Psychology Psychiatry and Mental Health