Validity and Reliability of Food Addiction Inventory among High School Students in Marand County

Abstract

Background: According to the World Health Organization (WHO), by 2020, chronic non-communicable diseases will account for three quarters of deaths in developing countries and nutritional problems are the root cause of many major chronic diseases. Food addiction at the individual level causes problems in physical and mental health and social dysfunction of individuals, and also affects family functioning by affecting family relationships. Drug addiction can cause many physical and mental problems. Therefore, there is a tool to identify this behavioral disorder of the health needs of communities . Objectives: The purpose of this study was to investigate the validity and reliability of food addiction inventory. Methods and materials: In this study, 280 students participated through cluster sampling from high schools. The instrument of the present study is the Yale food Addiction Questionnaire. Data were collected by anthroupometric measuring (height and weight) and evaluation based on the viewpoints of the participants by filling in the questionnaire. In order to examine the reliability of the questionnaire, the internal consistency method was applid by Cronbach's alpha and test-retest. To assess the content validity, relative content validity coefficient (CVR) and content validity index (CVI) were used and instrument validity was conducted through exploratory and exploratory factor analysis. Data analysis was performed using SPSS version 23 software. Results: 52% of the participants were female and 48% were male. 78% of the participants had normal or thin BMI, 15.5% were overweight and 5.9% were obese. 52% of participants were 15-16 years old and 48% were aged 18-18 years old. To verify the reliability of the questionnaire, we used internal consistency method using Cronbach's alpha. The Cronbach's alpha of the questionnaire was 0.724. The questionnaire was used to verify the reliability of the questionnaire and the internal correlation index of the items was at the range of 0.288-0.882. Content validity was confirmed by using two relative content validity and content validity index. The validity of the instrument was analyzed by factor analysis by main components and varimax rotation, and taking into account a special value larger than one. To determine the number of factors, the study events were carried out, with 8 factors identified. In this study, the confirmatory factor analysis was fitted to the 12-factor main model and, with regard to the poor fit of the event model, we used index correction for the improvement of the model. Finally, after the displacements and changes on the main model, a model with seven factors was obtained that has moderate fit of the events. Conclusion: Based on the results of this study, the reliability of the Persian version of the questionnaire is approved, but due to the poor fit of the event model, validation with the data mentioned in our population is not present and the results of factor analysis and exploration of the dimming of the 8 dimensions of the questionnaire in the target population A further study should be done on the localization of this questionnaire, and if this questionnaire is matched with Iranian culture or a change in some of the questionnaire questions, it can be used in future research and therapeutic activities.