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Incremental validity of the episode size criterion in binge-eating definitions

Title: Incremental validity of the episode size criterion in binge-eating definitions: An examination in women with purging syndromes.
Name(s): Forney, K Jean, author
Bodell, Lindsay P, author
Haedt-Matt, Alissa A, author
Keel, Pamela K, author
Type of Resource: text
Genre: Journal Article
Date Issued: 2016-07-01
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Of the two primary features of binge eating, loss of control (LOC) eating is well validated while the role of eating episode size is less clear. Given the ICD-11 proposal to eliminate episode size from the binge-eating definition, the present study examined the incremental validity of the size criterion, controlling for LOC. Interview and questionnaire data come from four studies of 243 women with bulimia nervosa (n = 141) or purging disorder (n = 102). Hierarchical linear regression tested if the largest reported episode size, coded in kilocalories, explained additional variance in eating disorder features, psychopathology, personality traits, and impairment, holding constant LOC eating frequency, age, and body mass index (BMI). Analyses also tested if episode size moderated the association between LOC eating and these variables. Holding LOC constant, episode size explained significant variance in disinhibition, trait anxiety, and eating disorder-related impairment. Episode size moderated the association of LOC eating with purging frequency and depressive symptoms, such that in the presence of larger eating episodes, LOC eating was more closely associated with these features. Neither episode size nor its interaction with LOC explained additional variance in BMI, hunger, restraint, shape concerns, state anxiety, negative urgency, or global functioning. Taken together, results support the incremental validity of the size criterion, in addition to and in combination with LOC eating, for defining binge-eating episodes in purging syndromes. Future research should examine the predictive validity of episode size in both purging and nonpurging eating disorders (e.g., binge eating disorder) to inform nosological schemes. © 2016 Wiley Periodicals, Inc. (Int J Eat Disord 2016; 49:651-662).
Identifier: FSU_pmch_26841103 (IID), 10.1002/eat.22508 (DOI), PMC4942344 (PMCID), 26841103 (RID), 26841103 (EID)
Keywords: Binge eating, Loss of control, Nosology, Purging
Grant Number: F31 MH085456, F31 MH105082, R01 MH061836
Publication Note: This NIH-funded author manuscript originally appeared in PubMed Central at
Subject(s): Adult
Binge-Eating Disorder/classification
Binge-Eating Disorder/diagnosis
Binge-Eating Disorder/psychology
Bulimia Nervosa/classification
Bulimia Nervosa/diagnosis
Bulimia Nervosa/psychology
International Classification of Diseases
Surveys and Questionnaires
Persistent Link to This Record:
Owner Institution: FSU
Is Part Of: The International journal of eating disorders.
Issue: iss. 7, vol. 49

Choose the citation style.
Forney, K. J., Bodell, L. P., Haedt-Matt, A. A., & Keel, P. K. (2016). Incremental validity of the episode size criterion in binge-eating definitions: An examination in women with purging syndromes. The International Journal Of Eating Disorders. Retrieved from