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Predictors of outcome for two treatments for bulimia nervosa: Short and long term
Author(s) -
Turnbull Susan J.,
Schmidt Ulrike,
Troop Nicholas A.,
Tiller Jane,
Todd Gill,
Treasure Janet L.
Publication year - 1997
Publication title -
international journal of eating disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.785
H-Index - 138
eISSN - 1098-108X
pISSN - 0276-3478
DOI - 10.1002/(sici)1098-108x(199701)21:1<17::aid-eat2>3.0.co;2-6
Subject(s) - bulimia nervosa , binge eating , psychology , outcome (game theory) , cognition , medicine , psychiatry , eating disorders , mathematics , mathematical economics
Objective This study examined pretreatment variables to predict outcome in two treatments for bulimia nervosa. Method: Patients were offered either 16 weeks of cognitive‐behavioral therapy (CBT) or a self‐treatment manual followed by up to 8 weeks of CBT (sequential group). Using complete data, stepwise regression analyses were performed. Results: It was found the a longer duration of illness and lower binge frequency predicted a better outcome both at the end of treatment (p < .001) and at 18 months of follow‐up (p < .005). In the sequential group, lower pretreatment binge frequency predicted better outcome at the end of treatment (p < .05) and at 18 months of follow‐up (p < .05). In the CBT group, longer duration of illness predicted better outcome at the end of treatment (p < .02). Discussion: It is concluded that (1) those with more frequent binging may require a more intense intervention and (2) those who have been ill longer may be more motivated to respond to treatment. © 1997 by John Wiley & Sons, Inc.