IPT-BNm is an effective treatment for patients with Bulimic Eating Disorders and appears to work quickly, as there were significant reductions in eating disorders symptoms within the first eight sessions of treatment.

. Objective: To determine predictors of treatment outcomes in patients with Bulimic Eating Disorders treated with Interpersonal Psychotherapy (IPT). Design: Fo- llowing initial assessment, 80 patients with diagnoses of Bulimia Nervosa or Eating Disorders Not Otherwise Specified (EDNOS), entered treatment in the form of 16 sessions of IPT. Patients were assessed using a validated semi-structure interview (Clinical Eating Disorders Rating Instrument-CEDRIC) and completed mea- sures of self-esteem (Rosenberg Self-esteem Scale-RSE), eating psychopathology (Eating Disorders Examination Questionnaire-EDE-Q), interpersonal functioning (Inventory of Interpersonal Functioning- IIP-32), and depression (Beck Depression Inventory-BDI). Method: Remission and recovery after 16 sessions of IPT were the two outcomes of interest. Univariate analysis and a series of backwards stepping logistic regressions were performed to determine the variables associated with remission and recovery. Result: Low self-esteem and less interpersonal problems were the main predictors of poor outcome. Conclusion: As patients with Bulimic Disorders with low levels of interpersonal problems and high levels of low self-esteem are likely to do less well with IPT, different type of treatment should be offered to them. A randomized controlled trial could explore this hypothesis in more detail. Key words: Interpersonal Psychotherapy, Bulimia Nervosa, EDNOS, Predictors.   Resumen. Objetivo: Determinar los factores de pronóstico del tratamiento de la bulimia nerviosa con terapia interpersonal. Diseño: 80 pacientes con el diagnostico de Bulimia Nerviosa (BN) o trastornos del comportamiento alimentario no especificados con características de BN (TCANE) fueron tratados con 16 sesiones de terapia inter- personal. Los pacientes fueron evaluados utilizando una entrevista semi-estructural (Clinical Eating Disorders Rating Instrument-CEDRIC). También completaron una batería de cuestionarios para evaluar los niveles de estima personal (Rosenberg Self-esteem Scale -RSE), la psicopatología de los trastornos de la alimentación (Eating Disorders Examination Questionnaire-EDE-Q), la función interpersonal (Inventory of Interpersonal Functioning-IIP-32) y los niveles de depresión (Beck Depression Inventory-BDI). Método: El pronóstico de interés fue definido por la variable de remisión y recuperación. Para el análisis del estudio se realizaron una serie de regresiones logísticas. Resultado: Baja estima personal, y una menor patología en la función interpersonal fueron los factores de peor pronóstico. Conclusión: Aunque la terapia interpersonal es un tratamiento efectivo para las personas que sufren de bulimia nerviosa, los pacientes con estas patologías con baja estima personal y menos problemas interpersonales deberían de ser tratados con otro tipo de terapia. Palabras clave: Terapia interpersonal, Bulimia Nerviosa, TCANE, Pronóstico.