Allied health articleComprehensive interview assessment of eating behavior 18–35 months after gastric bypass surgery for morbid obesity
Section snippets
Participants
The study participants were 59 severely obese patients (50 women and 9 men) who had undergone RYGB at the Department of Surgery, MeritCare Health Systems (Fargo, ND). A total of 119 bariatric surgery candidates had agreed to participate in the present study. All patients gave written informed consent before their preoperative evaluation and agreed that they could be contacted for additional follow-up after surgery. The study was approved by the Human Subjects Committees of the Neuropsychiatric
Preoperative eating disorders
A diagnosis of BED was assessed prospectively using the QEWP [21] and retrospectively at follow-up using the EDE-BSV interview. Using the QEWP, 14 patients (23.7%) met the full diagnostic criteria for BED. Using the EDE-BSV interview, 17 patients (28.8%) met the full eating disorder criteria before surgery (BN in 2 and BED in 15). With both methods, all patients with an eating disorder preoperatively were women. The agreement between QEWP and EDE-BSV was satisfactory, with 84.7% agreement and
Discussion
This is the first study to apply a standardized face-to-face interview rather than self-report measures or telephone interviews to provide a fine-grained description of postoperative eating behaviors. Overall, non-normative eating behaviors were common. Preoperatively, the prevalence of BED or BN was 28.8% in our sample, which is within the wide range of 2–49% found in the published data [13], [28]. Postoperatively, no OBEs were detected in our sample, likely owing to the small size of the
Conclusion
The present study has provided a detailed assessment of a range of eating behaviors on average 2 years after gastric bypass. Our results showed that a subgroup of patients after weight loss surgery will develop or redevelop subjective binge or “loss of control” eating and self-induced vomiting for weight and shape reasons. A preoperative eating disorder seemed to be a clear predictor; however, not all of those with preoperative binge eating (<50%) will develop SBE or “loss of control” eating or
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