Validation of the Greek version of the Binge Eating Scale in a sample of binge eating disorder patients.

Binge eating disorder (BED), the most prevalent eating disorder, carries significant physical and psychological consequences. Therefore, there is a continuous need to assess binge eating symptomatology and evaluate the effectiveness of various therapeutic interventions. The Binge Eating Scale (BES), which is a self-administered questionnaire, is widely used to assess binge eating in obese people. It examines the person' s experience of binge eating and the emotional, cognitive, and behavioural symptoms associated with it. The purpose of the present study was to translate and adapt BES in Greek, as well as to assess the factorial structure of BES and evaluate its psychometric properties. A sample of 160 participants (90% females) with a mean age of 40.7 years (SD=11.5 years) and a mean body mass index (BMI) 37.5kg/m2 (SD=9.2kg/m2) completed the BES and the Eating Disorder Examination Questionnaire (EDE-Q). An exploratory factor analysis (EFA) was carried out to assess the construct validity of the BES in a sample of patients with BED according to DSM-5 who came for therapy at the Eating Disorders Unit at Eginition Hospital and the day center "Anasa". The two-factor structure fits the data best. Regarding internal consistency, the results were acceptable, with Cronbach' s alpha equal to 0.78. The BES has high significant correlations with the Eating Concern, Weight Concern, and Shape Concern subscales and the Global Score of EDE-Q, but not with the Restrain subscale. Also, BES has correlations with the specific EDE-Q questions about the frequency of objective and subjective binge eating episodes. A high correlation was obtained with the measure of ΒΜΙ too. The Greek version of BES is a valid and reliable scale to evaluate binge eating in a clinical population diagnosed with BED.