Self-efficacy after bariatric surgery for obesity. A population-based cohort study

John A. Batsis, Matthew M. Clark, Karen Grothe, Francisco Lopez-Jimenez, Maria L. Collazo-Clavell, Virend K. Somers, Michael G. Sarr

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


Background: Eating behaviors often predict outcomes after bariatric surgery, and in this regard, self-efficacy has been shown to predict long-term behavior. We examined current eating self-efficacy in post-bariatric surgery patients comparing them to obese non-surgery patients to determine whether weight loss is associated with increased self-efficacy in post-bariatric surgery patients. Methods: We performed a population-based study of patients evaluated for Roux-en-Y gastric bypass and administered a survey using the Weight Efficacy Lifestyle (WEL) Questionnaire. There were 148 surgical and 88 non-operative patients who responded. Overall WEL score was assessed using linear regression models. Predictors of an increased self-efficacy score were also examined. Results: Follow-up was 4.0 and 3.8 years in the operative and non-operative groups, respectively. Operative responders were slightly older and had a lesser BMI compared to non-responders, otherwise the demographics were similar. Difference in overall WEL between groups was 25.5 ± 5.3 points on a 0-180 scale. A 25% change in weight was associated with a difference of 15.4 points on the total WEL between groups. Current self-efficacy scores were highly related to weight loss and correlated to quality of life at follow-up (ρ = 0.36). Conclusion: Profound weight loss after bariatric surgery is associated with increased eating self-efficacy in a population of obese adults seeking medical treatment for obesity.

Original languageEnglish (US)
Pages (from-to)637-645
Number of pages9
Issue number3
StatePublished - Jun 2009


  • Bariatric surgery
  • Behavior modifications
  • Obesity
  • Population studies
  • Self-efficacy
  • Weight loss

ASJC Scopus subject areas

  • Psychology(all)
  • Nutrition and Dietetics


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