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Validation of the Arabic version of the ORTO-15 questionnaire in a sample of the Lebanese population.

Article type: Published article


PURPOSE: The aim of the study was to develop an Arabic version of the ORTO-15 test and to examine the scale reliability and validity among a sample of the Lebanese population. METHODS: This was a cross-sectional study, conducted between January and May 2018, which enrolled 806 participants, divided into two equal samples, from all Lebanese governorates. The ORTO-15 scale was used to evaluate orthorexia nervosa (ON) tendencies and behaviors among participants. RESULTS: The factor analysis conducted on sample 1 suggested a three-factor structure for the ORTO-15 explaining a total of 50.59% of the variance. All items could be extracted from the list; none of the items was removed. The internal consistency of the measurement was adequate (Cronbach's alpha = 0.82). Higher body dissatisfaction (r = - 0.082), higher restrained eating (r = - 0.13) and higher eating attitudes (EAT score) (r = - 0.13) were significantly associated with higher levels of orthorexia tendencies and behaviors (lower ORTO-15 score). We could not detect any significant association between BMI and ORTO-15 test. A confirmatory factor analysis performed on sample 2 supported the three-factor structure of the ORTO-15 test obtained in the first sample. The following results were obtained: the Maximum Likelihood Chi Square = 22.0 and Degrees of Freedom = 9, which gave a × 2/df = 2.4. For non-centrality fit indices, the Steiger-Lind RMSEA was 0.10 [0.040-0.208]. Moreover, the Joreskog GFI equaled 0.926 and AGFI equaled 0.901. CONCLUSION: The Arabic version of the ORTO-15 test can be used to screen for ON tendencies and behaviors. LEVEL OF EVIDENCE: Level V, cross-sectional descriptive study.

Full citation

Haddad, C., Hallit, R., Akel, M., Honein, K., Akiki, M., Kheir, N., Obeid, S., & Hallit, S. (2020). Validation of the Arabic version of the ORTO-15 questionnaire in a sample of the Lebanese population. Eating and Weight Disorders : EWD, 25(4), 951–960. https://doi.org/10.1007/s40519-019-00710-y


Methods Condition Gender Age Country Setting Sample size
General population Both Lebanon
Commuinty 806

Number of items

15 items


Measure does not require training

Required time

Not available

Access measure

Not available

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Articles last updated: December 2020