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Clinical Trial
. 1997 Jan;21(1):17-22.
doi: 10.1002/(sici)1098-108x(199701)21:1<17::aid-eat2>3.0.co;2-6.

Predictors of outcome for two treatments for bulimia nervosa: short and long-term

S J Turnbull  1 , U Schmidt, N A Troop, J Tiller, G Todd, J L Treasure
Affiliations
Clinical Trial

Predictors of outcome for two treatments for bulimia nervosa: short and long-term

S J Turnbull et al. Int J Eat Disord. 1997 Jan.

Abstract

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 that 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.

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