title: Are retrospective peer-review transfusion monitoring systems effective in reducing red blood cell utilization?
abstract: OBJECTIVE
  This research used a study-control group design and examined data collected from five hospitals to evaluate the effectiveness of retrospective peer-review systems on reducing utilization of red blood cells (RBCs).
  
  
  METHODS
  The effects of retrospective peer-review systems were studied in three parts: (1) trends of RBC utilization were compared by the slopes of linear regression lines that assessed the effect of time on RBC utilization among four study hospitals and one control hospital, (2) diagnosis-specific RBC utilization was compared between the control hospital and one matched study hospital, and (3) the effect of the retrospective review system of one study hospital was assessed by linear regression using data accumulated 1 year before and 2 years after implementation of the program.
  
  
  RESULTS
  Three study hospitals showed no significant changes in RBC utilization during the 10-month study period. One study hospital and the control hospital demonstrated trends of reduced RBC use with negative slopes of regression lines; however, there was no difference in the degree of the two slopes, and the diagnosis-specific RBC utilization was not lower at the study hospital than at the control hospital. Furthermore, implementation of the retrospective peer-review system at one study hospital demonstrated no effect on RBC utilization.
  
  
  CONCLUSIONS
  We conclude that the retrospective peer-review systems implemented at these four hospitals had no effect on reducing red blood cell utilization.
authors.affiliation: School of Public Health, University of California-Los Angeles, USA.
authors.forename: H T
authors.initials: HT
authors.lastname: Lam
authors.forename: S O
authors.initials: SO
authors.lastname: Schweitzer
authors.forename: L
authors.initials: L
authors.lastname: Petz
authors.forename: B A
authors.initials: BA
authors.lastname: Myhre
authors.forename: I A
authors.initials: IA
authors.lastname: Shulman
authors.forename: M H
authors.initials: MH
authors.lastname: Kanter
authors.forename: B
authors.initials: B
authors.lastname: Worthen
authors.forename: G W
authors.initials: GW
authors.lastname: Sun
mesh_terms: D017707:Erythrocyte Transfusion / Q000191:economics / Q000706:statistics & numerical data* / Q000639:trends; D005069:Evaluation Studies as Topic; D006761:Hospitals; D006801:Humans; D016014:Linear Models; D010380:Peer Review; D012189:Retrospective Studies