Abstract
Objective
DSM-5 has dropped subtyping of bulimia nervosa (BN), opting to continue inclusion of the somewhat contentious diagnosis of BN-nonpurging subtype (BN-NP) within a broad BN category. Some contend however that BN-NP is more like binge eating disorder (BED) than BN-P. This study examines clinical characteristics, eating disorder symptomatology, and Axis I comorbidity in BN-NP, BN-P, and BED groups to establish whether BN-NP more closely resembles BN-P or BED.
Method
Women with BN-P (n = 29), BN-NP (n = 29), and BED (n = 54) were assessed at baseline in an outpatient psychotherapy trial for those with binge eating. Measures included the Structured Clinical Interviews for DSM-IV, Eating Disorder Examination, and Eating Disorder Inventory-2.
Results
The BN-NP subtype had BMIs between those with BN-P and BED. Both BN subtypes had higher Restraint and Drive for Thinness scores than BED. Body Dissatisfaction was highest in BN-NP and predicted BN-NP compared to BN-P. Higher Restraint and lower BMI predicted BN-NP relative to BED. BN-NP resembled BED with higher lifetime BMIs; and weight-loss clinic than eating disorder clinic attendances relative to the BN-P subtype. Psychiatric comorbidity was comparable except for higher lifetime cannabis use disorder in the BN-NP than BN-P subtype
Discussion
These results suggest that BN-NP sits between BN-P and BED however the high distress driving inappropriate compensatory behaviors in BN-P requires specialist eating disorder treatment. These results support retaining the BN-NP group within the BN category. Further research is needed to determine whether there are meaningful differences in outcome over follow-up.
Original language | English |
---|---|
Article number | N/A |
Pages (from-to) | 231-238 |
Number of pages | 8 |
Journal | International Journal of Eating Disorders |
Volume | 47 |
Issue number | 3 |
DOIs | |
Publication status | Published - Apr 2014 |
Keywords
- classification
- binge eating disorder
- bulimia nervosa nonpurging
- DSM-5
- bulimia nervosa
- subtype
- COMMUNITY SAMPLE
- DIAGNOSTIC CROSSOVER
- ANOREXIA-NERVOSA
- DSM-V
- OBESITY
- PREVALENCE
- CRITERIA
- WEIGHT
- WOMEN
- CLASSIFICATION