title: Empirical support for a reclassification of eating disorders NOS.
abstract: OBJECTIVE
  To explore the empirical support for a reclassification of the eating disorders NOS (EDNOS) category.
  
  
  METHODS
  In a cross-sectional design eight specific subgroups of EDNOS were compared to anorexia nervosa (AN) and bulimia nervosa (BN) on interview-based data and questionnaire measures. The sample consisted of 965 patients in the age 13-54 years admitted to treatment for an eating disorder.
  
  
  RESULTS
  According to the DSM-IV 176(18%) presented with AN, 290(30%) with BN and 499(52%) with EDNOS. Of all EDNOS cases 34% could be reclassified as AN or BN. Three specific subgroups emerged as separate diagnostic entities. A heterogeneous subgroup of 122 patients (13% of all) was proposed as 'true' EDNOS. Implications of the results on the DSM-V are discussed.
  
  
  CONCLUSIONS
  The results support a broader definition of AN and BN and suggest subgroups of EDNOS as separate diagnostic entities. This results in a substantial reduction of the heterogeneous EDNOS group.
authors.affiliation: Eating Disorder Centre, Regional Centre of Child- and Adolescent Psychiatry, Aarhus University Hospital, Risskov, Denmark. jannhelv@rm.dk
authors.forename: J L
authors.initials: JL
authors.lastname: Helverskov
authors.forename: B
authors.initials: B
authors.lastname: Lyng
authors.forename: L
authors.initials: L
authors.lastname: Clausen
authors.forename: O
authors.initials: O
authors.lastname: Mors
authors.forename: M
authors.initials: M
authors.lastname: Frydenberg
authors.forename: P H
authors.initials: PH
authors.lastname: Thomsen
authors.forename: K
authors.initials: K
authors.lastname: Rokkedal
mesh_terms: D000293:Adolescent; D000328:Adult; D039721:Diagnostic and Statistical Manual of Mental Disorders; D001068:Feeding and Eating Disorders / Q000145:classification* / Q000175:diagnosis; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011795:Surveys and Questionnaires