title: A decade of change in obesity surgery. National Bariatric Surgery Registry (NBSR) Contributors.
abstract: BACKGROUND
  The International (formerly National) Bariatric Surgery Registry began collecting data in January 1986. The aim of this study was to examine changes in the practice of surgical treatment of severe obesity that occurred during the decade of 1986 through 1995, as observed in the IBSR data.
  
  
  METHODS
  All data submitted to the IBSR during the decade were transferred to the IBM mainframe computer for analysis. Characteristics of operative type populations were compared over time using analysis of variance (ANOVA) for age, body mass index (BMI), operative weight and Chi-square (chi2) test for gender.
  
  
  RESULTS
  There has been a steady increase over the decade in mean patient weight. The operations used have changed from predominantly 'simple' operations to more frequent use of 'complex' operations. Within the categories of 'simple' and 'complex', an increase in the variety of operations occurred. As a group, patients with 'simple' operations have been heavier, more often male and public pay patients than those who have undergone 'complex' operations. One year weight loss was greater for Roux-en-Y gastric bypass (RGB) than vertical banded gastroplasty (VBG), but follow-up rates were too low to study the relative merits of the operations used. The reported incidence of operative mortality and serious complications (leak with peritonitis, abscess and pulmonary embolism) remained low.
  
  
  CONCLUSIONS
  These observations and their implications can be summarized in three statements which relate to action for improved patient care in the beginning of the new century: (1) increasing weight of candidates for surgical treatment during this decade indicates the need for earlier use of operative treatment before irreversible complications of obesity can develop; (2) low risk of obesity surgery, decreasing postoperative hospital stay, and early weight control support the continued and increased use of surgical treatment; (3) continued widespread use of both 'simple' and 'complex' operations with increased modifications of standard RGB and VBG procedures emphasizes the need for standardized long-term data and analyses regarding both weight control and postoperative side-effects.
authors.affiliation: Department of Surgery, Iowa City, Iowa, USA.
authors.forename: E E
authors.initials: EE
authors.lastname: Mason
authors.forename: S
authors.initials: S
authors.lastname: Tang
authors.forename: K E
authors.initials: KE
authors.lastname: Renquist
authors.forename: D T
authors.initials: DT
authors.lastname: Barnes
authors.forename: J J
authors.initials: JJ
authors.lastname: Cullen
authors.forename: C
authors.initials: C
authors.lastname: Doherty
authors.forename: J W
authors.initials: JW
authors.lastname: Maher
mesh_terms: D000328:Adult; D000704:Analysis of Variance; D016009:Chi-Square Distribution; D005260:Female; D005500:Follow-Up Studies; D015391:Gastroplasty / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D009767:Obesity, Morbid / Q000453:epidemiology / Q000601:surgery*; D011183:Postoperative Complications / Q000453:epidemiology; D012042:Registries / Q000706:statistics & numerical data; D012307:Risk Factors; D013997:Time Factors; D015431:Weight Loss