[en] Objectives: To evaluate whether differing grades of severity of eating disorders (ED) bring about changes in feeding of nutritional importance or whether they are behavioural conditions with little repercussion on development from early ages prior to adolescence.To study to what extent anthropometrical and psycho-social factors participate in the process of development of ED from pre-adolescence. Material and Methods: Two transversal studies with two phases were performed. During the first phase 1522 primary or pre-adolescent school children were screened and 3122 secondary or adolescent school children. During the second phase 259 primary school subjects (129 at risk and 130 controls) and 425 secondary school subjects (217 at risk and 208 controls). Subjects with unspecified eating disorders were identified in each age group.The Children Eating Attitudes Test (ChEAT), Eating Attitudes Test (EAT) and Youth's Inventory-IV tests were performed. ED diagnoses were confirmed using the diagnostic interview for children and adolescents (in preadolescents) and the Schedules for Clinical Assessment in Neuropsychiatry (in adolescents). 3 nonconsecutive day's food intake was recorded (including a weekday). The Goldberg test was used to validate the estimation of energy intake. Feeding patterns were determined using factorial analysis (method of principal components), overweight and obesity using Cole et al's cut-off points and body dissatisfaction (BD) using the Body Areas Satisfaction Test. Data was analysed using the SPPS statistical package (version 13.0). Results: ED of greater severity was associated with lower energy intake in girls and this was more evident during adolescence. Calcium, phosphorous, iron and folates are the most susceptible nutrients to deficiency. Differen

[es] Objetivos: Valorar si los diferentes grados de severidad de los trastornos de la Conducta Alimentaria (TCA) conllevan cambios alimentarios con trascendencia nutricional o son cuadros conductuales con escasa repercusión sobre el desarrollo desde edades tempranas previas a la adolescencia. Estudiar en qué medida factores antropométricos y psicosociales participan en el proceso de desarrollo de los TCA desde la pradolescencia.Material y Métodos: Se basó en dos estudios transversales con diseño en doble fase. En la primera fase se han cribado a 1522 escolares de primaria o preadolescentes y a 3122 escolares de secundaria o adolescentes. En la segunda fase se estudiaron a 259 sujetos de primaria (129 de riesgo y 130 controles) y a 425 sujetos de secundaria (217 de riesgo y 208 controles). Se determinó, en cada grupo de edad, los sujetos con Trastornos de la Conducta Alimentaria No Especificados.Se administraron el Children Eating Atittudes Test (ChEAT), el Eating Atittudes Test (EAT) y Youth's Inventory-IV. Se confirmaron los diagnósticos de TCA mediante la Entrevista de Diagnóstico para Niños y Adolescentes (en los preadolescentes) y el Schedules for Clinical Assesment in Neuropsychiatry (en los adolescentes). Se determinó el consumo alimentario de 3 días no consecutivos (incluyendo uno no festivo). Se aplicó la técnica de Goldberg para validar la estimación de la ingesta energética referida. Se determinaron los patrones alimentarios mediante análisis factorial (método de componentes principales), el sobrepeso y la obesidad mediante los puntos de corte de Cole y col. y la insatisfacción corporal (IC) a través del Body Areas Satisfaction Test. Se analizaron los datos con el paquete estadístico SPSS 13.0.Resultados: Las mujeres consumen menos energía a mayor severidad de lo