RESUMO
The present study examined the latent structure of eating disorder symptoms in a large sample of patients with a diagnosis of anorexia nervosa restricting type, anorexia nervosa binge eating/purging type, and bulimia nervosa (n=3747). Three taxometric procedures (MAXimum EIGenvalue (MAXEIG), Mean Above Minus Below A (MAMBAC), and Latent-Mode Factor Analysis (L-Mode)) were applied to self-reported symptoms of bulimia, drive for thinness, body dissatisfaction, as well as body mass index. Taxometric analysis among patients with the restricting and binge eating/purging subtype of anorexia and those with bulimia nervosa supported a dimensional latent structure of eating disorder symptoms. Taxometric analysis also revealed a dimensional latent structure of eating disorder symptoms among patients with the restricting and binge eating/purging subtype of anorexia suggesting that the two anorexia subtypes may not represent discrete categories. These findings suggest that the diagnosis and assessment of eating disorder symptoms should be conceptualized from a dimensional framework.
Assuntos
Transtornos da Alimentação e da Ingestão de Alimentos/classificação , Transtornos da Alimentação e da Ingestão de Alimentos/diagnóstico , Adolescente , Adulto , Anorexia Nervosa/classificação , Anorexia Nervosa/diagnóstico , Transtorno da Compulsão Alimentar/classificação , Transtorno da Compulsão Alimentar/diagnóstico , Índice de Massa Corporal , Bulimia Nervosa/classificação , Bulimia Nervosa/diagnóstico , Criança , Classificação , Análise Fatorial , Feminino , Humanos , Pessoa de Meia-Idade , Adulto JovemRESUMO
The present study examined the relative contributions of changes in obsessive-compulsive symptoms among eating-disorder patients with (n = 254) and without (n = 254) obsessive-compulsive disorder (OCD) to eating-disorder symptom improvement observed with inpatient treatment. Consistent with hypothesis, multilevel mediation analyses revealed that improvements in OCD symptoms over time accounted for significant variance in the improvements in eating-disorder symptoms over time, with stronger mediation evident among eating-disorder patients with comorbid OCD (percent mediated; P(M) = 22.5%) compared to those without OCD (P(M) = 12.2%). However, decreases in eating-disorder symptoms over time fully mediated improvements in OCD symptoms over time, and this mediated pathway did not vary substantially as a function of comorbid OCD status. The theoretical and treatment implications of these findings for conceptualizing the relationship between eating disorders and OCD are discussed.
