What can dropouts teach us about retention in eating disorder treatment studies?

Objective: To describe strategies used to retain adolescents with bulimia nervosa (BN) in a randomized clinical trial, and to compare treatment completers and dropouts on baseline demographic and symptom severity information. Method: Adolescents with BN (N = 80) completed a demographic questionnaire, the Eating Disorder Examination, Rosenberg Self-esteem Scale, Family Adaptability and Cohesion Evaluation Scales, and Beck Depression Inventory prior to beginning treatment. Results: Several strategies were used to promote treatment retention (e.g., encouraging parental involvement in treatment, prompt rescheduling of cancelled appointments). Six participants (7.50%) voluntarily dropped out of treatment and three additional participants (3.75%) were asked to terminate treatment for medical/psychiatric reasons. Compared with treatment completers, noncompleters reported significantly longer duration of illness (p < .01). Sixty-two percent of treatment completers and only 22% of dropouts were from intact families. Conclusion: Examining factors related to retention in adolescent treatment trials is important, and could be utilized to improve retention in adult studies where drop out rates are higher.