title: Trends in utilization and outcomes of bariatric surgery in obese people with and without type 2 diabetes in Spain (2001-2010).
abstract: OBJECTIVE
  Bariatric surgery is associated with a significant improvement in glucose control and even diabetes remission. There are no studies investigating national trends in the use of bariatric surgery in people with type 2 diabetes. We examine trends in the use of bariatric surgery in patients with and without type 2 diabetes between 2001 and 2010 in Spain.
  
  
  METHODS
  We identified patients who underwent bariatric surgery using national hospital discharge data. Discharges were grouped by diabetes status. Incidence of discharges due to bariatric surgery were calculated and stratified by diabetes status, procedure and year. We calculated length of stay (LOS) and in-hospital mortality (IHM).
  
  
  RESULTS
  From 2001 to 2010 13,038 bariatric surgery procedures were performed. Over the study period 23.6% (n=3080) of all patients undergoing bariatric procedure had DM as a co-diagnosis. This prevalence increased from 17.3% in 2001 to 25.5% in 2010. LOS and IHM were similar among patients with and without type 2 diabetes.
  
  
  CONCLUSIONS
  The proportion of subjects with type 2 diabetes among bariatric surgery patient has increased over time, in part due to an increase in the use of laparoscopic techniques.
authors.affiliation: Preventive Medicine and Public Health Teaching and Research Unit, Health Sciences Faculty, Rey Juan Carlos University, Avda de Atenas s/n, Alcorcón, Madrid, Spain. ana.lopez@urjc.es
authors.forename: Ana
authors.initials: A
authors.lastname: Lopez-de-Andres
authors.forename: Rodrigo
authors.initials: R
authors.lastname: Jiménez-García
authors.forename: Valentin
authors.initials: V
authors.lastname: Hernández-Barrera
authors.forename: Angel
authors.initials: A
authors.lastname: Gil-de-Miguel
authors.forename: M Isabel
authors.initials: MI
authors.lastname: Jiménez-Trujillo
authors.forename: Pilar
authors.initials: P
authors.lastname: Carrasco-Garrido
mesh_terms: D000328:Adult; D050110:Bariatric Surgery / Q000401:mortality / Q000639:trends*; D015897:Comorbidity / Q000639:trends; D003924:Diabetes Mellitus, Type 2 / Q000601:surgery; D005260:Female; D015390:Gastric Bypass / Q000379:methods / Q000639:trends; D017052:Hospital Mortality / Q000639:trends; D006801:Humans; D010535:Laparoscopy / Q000639:trends; D007902:Length of Stay / Q000639:trends; D008297:Male; D008875:Middle Aged; D009765:Obesity / Q000453:epidemiology / Q000601:surgery*; D009767:Obesity, Morbid / Q000601:surgery; D013030:Spain / Q000453:epidemiology; D016896:Treatment Outcome