ABSTRACT
OBJETIVO: Evaluar la validez y la utilidad diagnóstica de la escala EAT-26 para la evaluación del riesgo de trastornos de conducta alimentaria (TCA) en población femenina. DISEÑO: Estudio observacional de validación de pruebas. Emplazamiento: Realizado en la ciudad de Medellín en nivel de atención comunitaria de consulta psiquiátrica mixta (pública y privada). Participantes: Veinticinco mujeres con edades entre 15 y 25 años que cumplieran criterios DSM-IV-TR para anorexia y bulimia nerviosa y 111 controles sin TCA. Mediciones principales: La muestra de casos fue por conveniencia y en controles, aleatoria simple. Se comparó el «criterio de oro» (entrevista estructurada por psiquiatra para determinar el cumplimiento o no de criterios de inclusión de caso de TCA) con el EAT-26, y al instrumento se le hizo validación cultural y semántica, validación factorial, evaluación de confiabilidad, así como determinación del mejor punto de corte por medio de la curva ROC. RESULTADOS: En EAT-26 subyacen 4 dominios: bulimia, dieta, preocupación por la comida y control oral. El alfa de Cronbach fue de 92,1%, y el mejor valor de corte, el de 11 y más puntos (sensibilidad del 100% y especificidad del 85,6%). CONCLUSIÓN: El EAT-26 modificado y abreviado es un instrumento multidimensional, con excelentes valores de confiabilidad y sensibilidad, y con un adecuado valor de especificidad, apropiado para el cribado de posible TCA en población de riesgo y útil en atención primaria para su detección temprana en mujeres jóvenes
OBJECTIVE: To establish diagnostic validity and usefulness of EAT-26 for the risk assessment of Eating Disorder (ED) in a female population. Description: Observational validation study questionnaire. Setting: Performed in a Medellin city community care level of mixed (public and private)psychiatric consultation. Subjects: Twenty five subjects aged 15 to 25 with DSM-IV-TR diagnostic criteria for anorexia and bulimia nervosa and 111 controls without ED. Main outcomes measures: The case sample was for convenience and in controls an aleatory simple one. Gold standard (structured psychiatrist interview confirming the fulfillment of ED case inclusion criteria) was compared with EAT-26 questionnaire; reliability was assessed, cultural, semantics and factorial validation was made and the best cut-off score was established with the ROC curve. RESULTS: Four domains remain in the instrument: bulimia, dieting, food preoccupation and oral control. The Cronbach's alpha was 92.1% and a score of 11 and over is the best cut-off (sensitivity100%, and specificity 85.6%). CONCLUSIONS: This modified and abbreviated EAT-26 questionnaire is an ideal multidimensional instrument for ED screening in risk population, with excellent reliability and sensitivity values and satisfactory specificity. EAT-26 is a useful measure to be considered when strategies for ED early detection are implemented in young women
Subject(s)
Humans , Female , Adolescent , Young Adult , Risk Adjustment/methods , Feeding and Eating Disorders/epidemiology , Psychometrics/instrumentation , Reproducibility of Results , Risk Factors , ROC Curve , Reproducibility of Results , Sensitivity and SpecificityABSTRACT
OBJECTIVE: To establish diagnostic validity and usefulness of EAT-26 for the risk assessment of Eating Disorder (ED) in a female population. DESCRIPTION: Observational validation study questionnaire. SETTING: Performed in a Medellin city community care level of mixed (public and private) psychiatric consultation. SUBJECTS: Twenty five subjects aged 15 to 25 with DSM-IV-TR diagnostic criteria for anorexia and bulimia nervosa and 111 controls without ED. MAIN OUTCOMES MEASURES: The case sample was for convenience and in controls an aleatory simple one. Gold standard (structured psychiatrist interview confirming the fulfillment of ED case inclusion criteria) was compared with EAT-26 questionnaire; reliability was assessed, cultural, semantics and factorial validation was made and the best cut-off score was established with the ROC curve. RESULTS: Four domains remain in the instrument: bulimia, dieting, food preoccupation and oral control. The Cronbach's alpha was 92.1% and a score of 11 and over is the best cut-off (sensitivity 100%, and specificity 85.6%). CONCLUSIONS: This modified and abbreviated EAT-26 questionnaire is an ideal multidimensional instrument for ED screening in risk population, with excellent reliability and sensitivity values and satisfactory specificity. EAT-26 is a useful measure to be considered when strategies for ED early detection are implemented in young women.
