title: Quality of life after gastric bypass surgery: a cross-sectional study.
abstract: OBJECTIVE
  Numerous reports document significant weight loss after gastric bypass; however, there is little objective data on postsurgical changes in health-related quality of life (HRQL).
  
  
  METHODS
  This study examined HRQL in four groups of patients: presurgery (T1), several weeks postsurgery (T2), 6 months postsurgery (T3), and 1 year postsurgery (T4). Subjects were given three HRQL measures: the short form 36 (SF-36), the Impact of Weight on Quality of Life-Lite Questionnaire (IWQOL-Lite), and the Bariatric Analysis and Reporting Outcome System (BAROS). Subjects also completed the Beck Depression Inventory (BDI) and the Rosenberg Self-Esteem Scale (RSE).
  
  
  RESULTS
  There were no significant differences among the groups on demographics or presurgical body mass index. Results showed significant differences between T1 and T2 on several SF-36 and IWQOL-Lite subscales, as well as the RSE and BDI. Significant differences were found on all measures between T2 and T3. Significant differences were found on all subscales of the IWQOL-Lite, but no subscales of the SF-36, the RSE, or the BDI between T3 and T4.
  
  
  CONCLUSIONS
  This study is the first to objectively document these differences in several objective measures of HRQL, depression, and self-esteem after gastric bypass in a large sample. It is notable that many differences are apparent within several weeks after surgery. Furthermore, results indicate that the IWQOL-Lite may be more sensitive than the SF-36 to the changes of quality of life that gastric bypass patients report.
authors.affiliation: Department of Psychiatry and. Department of Surgery, The University of Chicago Hospitals, Chicago, Illinois, USA. mdymek@yoda.bsd.uchicago.edu
authors.forename: Maureen P
authors.initials: MP
authors.lastname: Dymek
authors.forename: Daniel
authors.initials: D
authors.lastname: Le Grange
authors.forename: Kim
authors.initials: K
authors.lastname: Neven
authors.forename: John
authors.initials: J
authors.lastname: Alverdy
mesh_terms: D000328:Adult; D015992:Body Mass Index; D003430:Cross-Sectional Studies; D005260:Female; D015390:Gastric Bypass; D006801:Humans; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000601:surgery*; D011788:Quality of Life; D012649:Self Concept; D011795:Surveys and Questionnaires; D013997:Time Factors; D015431:Weight Loss