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Subtyping binge eating disorder.

C M Grilo1, R M Masheb, G T Wilson

  • 1Department of Psychiatry, Yale University School of Medicine, New Haven, Connecticut 06520, USA. carlos.grilo@yale.edu

Journal of Consulting and Clinical Psychology
|January 5, 2002
PubMed
Summary
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Binge eating disorder (BED) research identified two subtypes: pure dietary and dietary-negative affect. The latter group showed more psychopathology, suggesting distinct, stable variations in BED presentation.

Area of Science:

  • Psychiatry
  • Clinical Psychology
  • Eating Disorders Research

Background:

  • Previous cluster-analytic studies identified two subtypes of bulimia nervosa and binge eating disorder (BED): pure dietary and mixed dietary-negative affect.
  • Subtyping BED is crucial for understanding its heterogeneity and guiding treatment.

Purpose of the Study:

  • To replicate BED subtyping using cluster analysis.
  • To explore alternative subtyping approaches.
  • To assess the stability of identified subtypes in individual differences.

Main Methods:

  • Cluster analysis was performed on data from 101 BED patients.
  • Alternative subtyping methods, including major depression and binge eating frequency, were considered.
  • Subtype stability was tested on a subset of 73 patients over a 4-week period.

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Main Results:

  • Two subtypes emerged: a pure dietary subtype (67%) and a dietary-negative affect subtype (33%).
  • The dietary-negative affect subtype exhibited higher levels of eating-related psychopathology and psychological disturbance.
  • Alternative subtyping approaches yielded different results.
  • Subtype consistency over 4 weeks was significant (kappa = .55).

Conclusions:

  • Moderate dieting is a common characteristic of BED.
  • Affective disturbances define a more disturbed variant within a subset of BED patients.
  • The identified subtypes appear to represent relatively stable individual differences.