title: Similar cost for elective open and endovascular AAA repair in a population-based setting.
abstract: OBJECTIVE
  To compare cost differences between elective open repair (OR) and endovascular repair (EVAR) of abdominal aortic aneurysm in a population-based setting.
  
  
  METHODS
  Clinical data and hospital-related costs (pre-, peri-, and postoperative) were analyzed for 109 consecutive AAA procedures (98 men; mean age 73 years, range 48-95; mean aneurysm diameter 61 mm, range 42-120) performed from 2001 to 2005 (58 OR, 51 EVAR) in our primary catchment area. Data were obtained through case records and hospital accounting systems. Nonparametric bootstrap was used for cost comparison.
  
  
  RESULTS
  EVAR patients were older (76 versus 70 years, p<0.001) and had more comorbidities (ASA class 2.6 versus 2.3, p = 0.025). OR patients more often had anatomically complex aneurysms (52% versus 14%, p<0.001). Comparison of data with diagnosis-based reimbursement levels nationally and internationally indicated adequate cost level in the study. No difference was observed in total cost between OR and EVAR (euro29,786 versus euro26,382; p = 0.336). Preoperative cost was lower for OR compared to EVAR (euro661 versus euro1494, p = 0.002). OR patients had higher cost of intensive care [36% (euro8921) of perioperative cost versus 7% (euro1460), p = 0.001], while EVAR had higher implant cost [36% (euro7468) versus 2% (euro448), p<0.001]. Mean follow-up was 2.5 years (range 0.5-5.4). Mean postoperative cost was similar (OR euro4613 versus EVAR euro4403, p = 0.209; 16% and 17% of total cost, respectively). Postoperative cost after OR was high early on, with lower cost thereafter. Postoperative cost after EVAR was more homogeneously distributed, leveling off at euro500 to euro1000 annually over 5 years.
  
  
  CONCLUSIONS
  In a population-based setting, total cost was similar for OR and EVAR. There were, however, important differences in patient characteristics and cost structure.
authors.affiliation: Department of Surgical Sciences, Section of Vascular Surgery, Uppsala University Hospital, Uppsala, Sweden. kevin.mani@surgsci.uu.se
authors.forename: Kevin
authors.initials: K
authors.lastname: Mani
authors.forename: Martin
authors.initials: M
authors.lastname: Björck
authors.forename: Jonas
authors.initials: J
authors.lastname: Lundkvist
authors.forename: Anders
authors.initials: A
authors.lastname: Wanhainen
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017544:Aortic Aneurysm, Abdominal / Q000191:economics / Q000601:surgery*; D019917:Blood Vessel Prosthesis Implantation / Q000191:economics*; D015897:Comorbidity; D003362:Cost-Benefit Analysis; D005260:Female; D017048:Health Care Costs; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012307:Risk Factors; D018709:Statistics, Nonparametric