title: Measuring costs in multisite randomized controlled trials: lessons from the VA Cooperative Studies Program.
abstract: OBJECTIVE
  The interest in the economic impact of new health care interventions has increased dramatically over recent years; however, the results can be highly variable depending upon the economic assumptions made and the approaches taken in collecting the data and in conducting the analyses. This paper describes experiences from the VA Cooperative Studies Program in measuring health care utilization and costs for studies that evaluate clinical interventions.
  
  
  METHODS
  Experiences from two multisite randomized clinical trials (RCTs) are highlighted to illustrate strategies used to measure costs by directly measuring health care utilization and economic data within the context of the trials.
  
  
  CONCLUSIONS
  Despite the substantial resources required to gather evidence about the cost of care for health care innovations, future VA multisite studies should include accepted health economic approaches to make important contributions to health planning and health policy within and outside the VA health care system.
authors.affiliation: Department of Veterans Affairs Cooperative Studies Program Coordinating Center, Edward Hines Jr. VA Hospital, Hines, IL 60141-5000, USA. hynes@research.hines.med.va.gov
authors.forename: D
authors.initials: D
authors.lastname: Hynes
authors.forename: D
authors.initials: D
authors.lastname: Reda
authors.forename: A
authors.initials: A
authors.lastname: Giobbie-Hurder
authors.forename: M
authors.initials: M
authors.lastname: Abdellatif
authors.forename: M
authors.initials: M
authors.lastname: Weinberger
authors.forename: E
authors.initials: E
authors.lastname: Oddone
authors.forename: J
authors.initials: J
authors.lastname: Wasson
authors.forename: W
authors.initials: W
authors.lastname: Henderson
mesh_terms: D003365:Costs and Cost Analysis / Q000379:methods*; D003625:Data Collection / Q000379:methods; D017048:Health Care Costs / Q000706:statistics & numerical data*; D006302:Health Services Research / Q000191:economics / Q000379:methods*; D006787:Hospitals, Veterans / Q000191:economics*; D006801:Humans; D008297:Male; D015337:Multicenter Studies as Topic / Q000191:economics*; D011468:Prostatectomy / Q000191:economics; D011470:Prostatic Hyperplasia / Q000628:therapy; D016032:Randomized Controlled Trials as Topic / Q000191:economics*; D014481:United States; D014493:United States Department of Veterans Affairs / Q000191:economics*