title: The efficacy and value of emergency medicine: a supportive literature review.
abstract: OBJECTIVE
  The goal of this study was to identify publications in the medical literature that support the efficacy or value of Emergency Medicine (EM) as a medical specialty and of clinical care delivered by trained emergency physicians. In this study we use the term "value" to refer both to the "efficacy of clinical care" in terms of achieving desired patient outcomes, as well as "efficiency" in terms of effective and/or cost-effective utilization of healthcare resources in delivering emergency care. A comprehensive listing of publications describing the efficacy or value of EM has not been previously published. It is anticipated that the accumulated reference list generated by this study will serve to help promote awareness of the value of EM as a medical specialty, and acceptance and development of the specialty of EM in countries where EM is new or not yet fully established.
  
  
  METHODS
  The January 1995 to October 2010 issues of selected journals, including the EM journals with the highest article impact factors, were reviewed to identify articles of studies or commentaries that evaluated efficacy, effectiveness, and/or value related to EM as a specialty or to clinical care delivered by EM practitioners. Articles were included if they found a positive or beneficial effect of EM or of EM physician-provided medical care. Additional articles that had been published prior to 1995 or in other non-EM journals already known to the authors were also included.
  
  
  RESULTS
  A total of 282 articles were identified, and each was categorized into one of the following topics: efficacy of EM for critical care and procedures (31 articles), efficacy of EM for efficiency or cost of care (30 articles), efficacy of EM for public health or preventive medicine (34 articles), efficacy of EM for radiology (11 articles), efficacy of EM for trauma or airway management (27 articles), efficacy of EM for using ultrasound (56 articles), efficacy of EM faculty (34 articles), efficacy of EM residencies (24 articles), and overviews and editorials of EM efficacy and value (35 articles).
  
  
  CONCLUSIONS
  There is extensive medical literature that supports the efficacy and value for both EM as a medical specialty and for emergency patient care delivered by trained EM physicians.
authors.affiliation: The Center for Disaster and Humanitarian Assistance Medicine, Uniformed Services University of the Health Sciences, and George Washington University School of Medicine and Health Sciences, Bethesda, MD, USA. jholliman@cdham.org.
authors.forename: C James
authors.initials: CJ
authors.lastname: Holliman
authors.forename: Terrence M
authors.initials: TM
authors.lastname: Mulligan
authors.forename: Robert E
authors.initials: RE
authors.lastname: Suter
authors.forename: Peter
authors.initials: P
authors.lastname: Cameron
authors.forename: Lee
authors.initials: L
authors.lastname: Wallis
authors.forename: Philip D
authors.initials: PD
authors.lastname: Anderson
authors.forename: Kathleen
authors.initials: K
authors.lastname: Clem