Matched Case-Control Study On The Relationship Of Dietary Patterns And Eating Disorders In Overweight And Obese School Children

Objective To explore the relationship of dietary patterns and eating disorder status among overweight and obese school children, and provide references for preventing obesity and eating disorders.Methods According to the BMI classification standards,186overweight and obese children and372normal weight children of2to4grades in6primary schools in shanghai were investigated with Eating Disorders Inventory for Children (EDI-C) and24-hour dietary record questionnaire by1:2matched case-control study. Using the factor analysis and logistic regression analysis to evaluate the relationship between dietary patterns and eating disorders in case and control groups children.Resultsâ‘ The percentage of children with elevated DT (Drive for Thinness), BD (Body Dissatisfaction) and EDRC (Eating Disorder Risk Composite) scores in case group is higher than that in control group (P<0.001). Logistic regression was used to estimate odds ratios(OR) of getting eating disorders in overweight and obese children. Drive for thinness, body dissatisfaction and composite eating disorder risk were positively associated with children obesity (P<0.001). OR for DT=1.088; OR for BD=1.144; OR for EDRC=1.075.â‘¡Factor analysis was used for exploring the existence of dietary patterns and their relationship with eating disorder status. There exist4patterns in case group explaining38.35%of the total variation and4patterns in control group explaining33.39%of the total variation. Factor scores were calculated with logistic regression analysis. Compared by the same Factor score level, Children with higher DT and BD subscales scores and higher EDRC scores in case group were more than that in control group.â‘¢Among case group children, those who had higher factor scores of junk-foods pattern and high-energy-density-foods pattern also had higher eating disorder subscales scores, while those who had lower factor scores of high-fiber-foods pattern had higher B(Bulimia) subscale scores.â‘£It was found that BD subscale average scores of girls were higher than that of boys.Conclusions Eating disorder symptoms, especially drive for thinness and body dissatisfaction were significantly associated with children overweight and obesity. Among children with the same level of factor scores, there were more children having drive for thinness, body dissatisfaction symptoms and composite eating disorder risks in case group than that in control group. In addition, the junk-foods pattern and high-energy-density-foods pattern were associated with related eating disorder symptoms for overweight and obese children, while high-fiber foods pattern may be a protective factor for bulimia symptoms.