Psychometric Properties of the Persian Version of the Night Eating Disorder Questionnaire

Objective This study assesses the factor structure and psychometric properties of Persian version of Night Eating Questionnaire Methods In this cross-sectional study, we randomly selected 155 people referred to Shafa hospital and private psychiatry clinic in Rasht City, Iran. After translation to Persian and back-translation to English, the face and content validity of NEQ Persian version were evaluated using the opinions of a panel of experts and calculating the content validity ratio and content validity index. Then, the construct validity was evaluated by Confirmatory Factor Analysis (CFA), the Cronbach α coefficient was used for assessing internal consistency and the Intra class Correlation Coefficient (ICC) was used for assessing test-retest reliability. Results The mean age of participants was 41.1 ± 12.9 Years. The CFA results showed that the four-factor model had a good fit. Cronbach’s alpha showed an overall coefficient of 0.72. Spearman’s correlation coefficient was 0.97 and the intra-class correlation coefficient was 0.99 (95% CI 0.97–0.99), indicating a satisfactory level of test-retest reliability. Conclusions The Persian version of the NEQ has acceptable psychometric properties for the Persian language and Iranian culture, to be used as a valid and reliable tool in future research, care, and therapeutic activities.