title: The validity of the DSM-IV scheme for classifying bulimic eating disorders.
abstract: OBJECTIVE
  This study was designed to assess the validity of the DSM-IV scheme for classifying recurrent binge eating.
  
  
  METHODS
  A general population sample of 250 young women with recurrent binge eating was recruited using a two-stage design. Information on their eating habits and associated psychopathology was obtained by personal interviews. Subjects were reassessed 1 year later.
  
  
  RESULTS
  The diagnosis of bulimia nervosa had good descriptive and predictive validity. On present state features it was not possible to distinguish binge-eating disorder from the nonpurging subtype of bulimia nervosa. However, these groups differed in their outcome at 1 year. Within eating disorder not otherwise specified (EDNOS), there was a subgroup of subjects with milder symptoms which were relatively unstable over time.
  
  
  CONCLUSIONS
  The findings suggest that bulimic eating disorders exist on a continuum of clinical severity, from bulimia nervosa purging type (most severe), through bulimia nervosa nonpurging type (intermediate severity), to binge-eating disorder (least severe). The data on outcome support retaining a distinction between nonpurging bulimia nervosa and binge-eating disorder.
authors.affiliation: University Department of Psychiatry, University of Oxford, United Kingdom.
authors.forename: P
authors.initials: P
authors.lastname: Hay
authors.forename: C
authors.initials: C
authors.lastname: Fairburn
mesh_terms: D000293:Adolescent; D000328:Adult; D002032:Bulimia / Q000145:classification* / Q000175:diagnosis; D005260:Female; D006801:Humans; D011237:Predictive Value of Tests; D011569:Psychiatric Status Rating Scales; D015203:Reproducibility of Results; D012720:Severity of Illness Index