title: Self-efficacy after bariatric surgery for obesity. A population-based cohort study.
abstract: 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 (rho=0.36).
  
  
  CONCLUSIONS
  Profound weight loss after bariatric surgery is associated with increased eating self-efficacy in a population of obese adults seeking medical treatment for obesity.
authors.affiliation: Section of General Internal Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, NH 03756, USA. Electronic address: john.batsis@gmail.com.
authors.forename: John A
authors.initials: JA
authors.lastname: Batsis
authors.affiliation: Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: clark.matthew@mayo.edu.
authors.forename: Matthew M
authors.initials: MM
authors.lastname: Clark
authors.affiliation: Department of Psychiatry and Psychology, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: grothe.karen@mayo.edu.
authors.forename: Karen
authors.initials: K
authors.lastname: Grothe
authors.affiliation: Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: lopez@mayo.edu.
authors.forename: Francisco
authors.initials: F
authors.lastname: Lopez-Jimenez
authors.affiliation: Division of Endocrinology, Nutrition, Metabolism & Diabetes, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: collazoclavell.maria@mayo.edu.
authors.forename: Maria L
authors.initials: ML
authors.lastname: Collazo-Clavell
authors.affiliation: Division of Cardiovascular Diseases, Department of Medicine, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: somers.virend@mayo.edu.
authors.forename: Virend K
authors.initials: VK
authors.lastname: Somers
authors.affiliation: Department of Surgery, Mayo Clinic, Rochester, MN 55905, USA. Electronic address: sarr.michael@mayo.edu.
authors.forename: Michael G
authors.initials: MG
authors.lastname: Sarr
mesh_terms: D000328:Adult; D001521:Behavior Therapy; D015992:Body Mass Index; D016022:Case-Control Studies; D015331:Cohort Studies; D005247:Feeding Behavior / Q000523:psychology*; D005260:Female; D005500:Follow-Up Studies; D015390:Gastric Bypass / Q000523:psychology*; D006801:Humans; D016014:Linear Models; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D009765:Obesity / Q000523:psychology / Q000601:surgery*; D011159:Population Surveillance; D011788:Quality of Life; D020377:Self Efficacy; D011795:Surveys and Questionnaires; D016896:Treatment Outcome; D015431:Weight Loss