[Cultural adaptation of the Eating Disorder Examination Questionnaire (EDE-Q 6.0)]

Adaptation of the Russian version of the Eating Disorder Examination Questionnaire (EDE-Q) 6.0, and assessment of its psychometric properties.

The study sample included 476 females, 208 with a confirmed diagnosis of an eating disorder (ED), and the rest were a healthy group. In addition to the Russian version of EDE-Q 6.0, the respondents completed a socio-demographic and other questionnaires widely used for the PPD diagnosis: the Eating Attitudes Test (EAT-26), the Eating Behavior Scale (EBS), and the Dutch Eating Behavior Questionnaire (DEBQ).

As a result of the confirmatory factor analysis, the four-factor structure of the Russian-language version of EDE-Q 6.0 was confirmed (Restraint, Eating concern, Shape concern, Weight concern). The internal consistency of the scales' questions is high (Cronbach's α=0.82-0.89). The clinical and healthy groups showed significant differences (p<0.05) on all scales, underscoring the questionnaire's diagnostic value. Correlations with the scales of other questionnaires used to diagnose ED confirmed the external validity of the Russian-language version of EDE-Q 6.0. The retest reliability assessment also showed high stability of the questionnaire's results over time (Spearman's Rho ranged from 0.72 to 0.89).

The Russian version of EDE-Q 6.0 demonstrates good psychometric properties and is suitable for use in clinical and scientific practice for screening and monitoring the development of ED in the Russian female population.