title: Trait-level and momentary correlates of bulimia nervosa with a history of anorexia nervosa.
abstract: OBJECTIVE
  Some investigators have suggested subtyping bulimia nervosa (BN) by anorexia nervosa (AN) history. We examined trait-level and momentary eating-related and psychosocial factors in BN with and without an AN history.
  
  
  METHODS
  Interview, questionnaire, and ecological momentary assessment data of eating-related and psychological symptoms were collected from 122 women with BN, including 43 with (BN+) and 79 without an AN history (BN-).
  
  
  RESULTS
  Body mass index (kg/m(2) ) was lower in BN+ than BN- (p = 0.001). Groups did not differ on trait-level anxiety, shape/weight concerns, psychiatric comorbidity, or dietary restraint; or on momentary anxiety, dietary restriction, binge eating, purging, or exercise frequency, or affective patterns surrounding binge/purge behaviors. Negative affect increased prior to exercise and decreased thereafter in BN+ but not BN-, although groups did not statistically differ.
  
  
  CONCLUSIONS
  Results do not support formally subtyping BN by AN history. Exercise in BN+ may modulate negative affect, which could have important treatment implications.
authors.affiliation: Department of Psychiatry and Behavioral Neuroscience, The University of Chicago, Chicago, IL 60637, USA. goldschmidta@uchicago.edu
authors.forename: Andrea B
authors.initials: AB
authors.lastname: Goldschmidt
authors.forename: Carol B
authors.initials: CB
authors.lastname: Peterson
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Wonderlich
authors.forename: Ross D
authors.initials: RD
authors.lastname: Crosby
authors.forename: Scott G
authors.initials: SG
authors.lastname: Engel
authors.forename: James E
authors.initials: JE
authors.lastname: Mitchell
authors.forename: Scott J
authors.initials: SJ
authors.lastname: Crow
authors.forename: Li
authors.initials: L
authors.lastname: Cao
authors.forename: Kelly C
authors.initials: KC
authors.lastname: Berg
mesh_terms: D000293:Adolescent; D000328:Adult; D000856:Anorexia Nervosa / Q000175:diagnosis* / Q000523:psychology; D001828:Body Image; D015992:Body Mass Index; D001835:Body Weight; D052018:Bulimia Nervosa / Q000145:classification* / Q000175:diagnosis* / Q000523:psychology; D005260:Female; D006801:Humans; D011569:Psychiatric Status Rating Scales; D011795:Surveys and Questionnaires