Highlights
- •Data were a good-to-excellent fit for the original EEI model
- •All EEI factors were correlated with baseline eating disorder symptoms
- •Greater negative reinforcement expectancies predicted poorer weight loss
Abstract
Background
While presurgical eating behaviors have demonstrated limited prognostic value, cognitions
regarding the effects of eating may serve as important predictors of weight loss outcomes
after bariatric surgery. The Eating Expectancies Inventory (EEI) is a commonly used,
self-report measure of expected consequences of eating; however, its psychometric
and predictive properties have not yet been evaluated among bariatric surgery patients.
Objectives
This study sought to examine the factor structure and internal consistency of the
EEI among bariatric surgery candidates, to examine relationships between EEI factors
and measures of eating psychopathology, and to explore the effects of eating expectancies
on postsurgical weight loss.
Setting
Data originated from an interdisciplinary bariatric surgery center in the Midwest
United States.
Methods
Two hundred sixty-two women completed self-report questionnaires before bariatric
surgery. Presurgical data and available postsurgical weights (at 6, 12, and 18 mo)
were obtained from medical records.
Results
Analyses indicated that the original 5-factor model was a good-to-excellent fit for
the EEI data. All EEI factors demonstrated good reliability and were significantly
associated with eating disorder symptoms and behaviors at baseline. Higher scores
on EEI Factor 1 (negative affect) and Factor 5 (alleviates boredom) predicted poorer
weight loss at 18 months postsurgery (n = 132).
Conclusions
Findings support the reliability and validity of the EEI among female bariatric candidates.
Presurgical eating expectancies were linked to pathologic eating patterns and also
predicted postsurgical weight loss trajectories, suggesting that eating expectancies
may have prognostic value as predictors of bariatric surgery outcomes.
Key words
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Article info
Publication history
Published online: August 12, 2019
Accepted:
July 31,
2019
Received:
April 23,
2019
Footnotes
This research was supported by Kent State University Community Research Fellowship Award (awarded to MAWH) and in part by the National Institutes of Mental Health (T32 MH08276).
Identification
Copyright
© 2019 American Society for Bariatric Surgery. Published by Elsevier Inc. All rights reserved.
