Evidence map›Paper›PMID 23582619›Full record

ArticleAnnals of emergency medicine2013

Cost-effectiveness of helicopter versus ground emergency medical services for trauma scene transport in the United States.

M Kit Delgado, Kristan L Staudenmayer, N Ewen Wang, David A Spain, Sharada Weir, Douglas K Owens, Jeremy D Goldhaber-Fiebert

Erratum issued Registry-linked trialAbstract readComparative Study
In one paragraph

Article in Annals of emergency medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. It is linked to trial NCT03940443 (Differences in Mortality and Morbidity in Patients Suffering a Time-critical Condition Between Ground Emergency Medical Services and Helicopter Emergency Medical Services - a Descriptive and Comparative Study), which is not on this map. Cited by 50 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 2 pooled it
11.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT03940443 unknown statusnot on this mapstarted 2019, after this paper: background citation

Differences in Mortality and Morbidity in Patients Suffering a Time-critical Condition Between Ground Emergency Medical Services and Helicopter Emergency Medical Services - a Descriptive and Comparative Study

TypeobservationalSponsorDalarna County Council, SwedenRan2019 to 2021Enrolled2,000ConditionsAmbulances, Traumatic Brain Injury, Acute Myocardial Infarction
3 · Its place in the literature

Who cites it

50 citing papers in PubMed, 2 syntheses or guidelines pooled it, 158 citations in OpenAlex.

  1. Pooled it
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  12. Prehospital time and mortality in pediatric trauma.Pediatric surgery international · 2024
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  17. A descriptive study of trauma patients transported by helicopter emergency medical services to a level one trauma centre.African journal of emergency medicine : Revue africaine de la medecine d'urgence · 2022
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

M Kit DelgadoDepartment of Surgery, Division of Emergency Medicine, Stanford University School of Medicine, Palo Alto, CA; Center for Health Policy and Center for Primary Care and Outcomes Research, Stanford University School of Medicine, Palo Alto, CA; Stanford Investigators for Surgery, Trauma, and Emergency Medicine, Stanford University School of Medicine, Palo Alto, CA. Electronic address: kit.delgado@uphs.upenn.edu.
Kristan L Staudenmayer
N Ewen Wang
David A Spain
Sharada Weir
Douglas K Owens
Jeremy D Goldhaber-Fiebert
Stanford University · USUniversity of Massachusetts Amherst · USVA Palo Alto Health Care System · US

Funding

Enabling Medical Research Growth in Emergency MedicineK12HL109009 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI KIMMEL, STEPHEN E. · 2011 to 2015
$3.4M
Training Program in Health Services ResearchT32HS000028 · AHRQ · STANFORD UNIVERSITY · PI OWENS, DOUGLAS K · 1986 to 2012
$1.6M
Disparities in Pediatric Trauma Outcomes: Context, Access and Quality of CareK23HD051595 · NICHD · STANFORD UNIVERSITY · PI WANG, NANCY EWEN · 2007 to 2011
$650k
Cost-effective chronic disease prevention in developing countriesK01AG037593 · NIA · STANFORD UNIVERSITY · PI GOLDHABER-FIEBERT, JEREMY DAVID · 2011 to 2015
$637k
AHRQ HHS T32 HS000028AHRQ HHS T32HS00028NHLBI NIH HHS K12 HL109009NIA NIH HHS K01 AG037593NIA NIH HHS K01AG037593-01A1NICHD NIH HHS K23 HD051595NICHD NIH HHS K23HD051595-02
6 · The paper itself

Abstract

STUDY

objectiveWe determine the minimum mortality reduction that helicopter emergency medical services (EMS) should provide relative to ground EMS for the scene transport of trauma victims to offset higher costs, inherent transport risks, and inevitable overtriage of patients with minor injury.

methodsWe developed a decision-analytic model to compare the costs and outcomes of helicopter versus ground EMS transport to a trauma center from a societal perspective during a patient's lifetime. We determined the mortality reduction needed to make helicopter transport cost less than $100,000 and $50,000 per quality-adjusted life-year gained compared with ground EMS. Model inputs were derived from the National Study on the Costs and Outcomes of Trauma, National Trauma Data Bank, Medicare reimbursements, and literature. We assessed robustness with probabilistic sensitivity analyses.

resultsHelicopter EMS must provide a minimum of a 15% relative risk reduction in mortality (1.3 lives saved/100 patients with the mean characteristics of the National Study on the Costs and Outcomes of Trauma cohort) to cost less than $100,000 per quality-adjusted life-year gained and a reduction of at least 30% (3.3 lives saved/100 patients) to cost less than $50,000 per quality-adjusted life-year. Helicopter EMS becomes more cost-effective with significant reductions in patients with minor injury who are triaged to air transport or if long-term disability outcomes are improved.

conclusionHelicopter EMS needs to provide at least a 15% mortality reduction or a measurable improvement in long-term disability to compare favorably with other interventions considered cost-effective. Given current evidence, it is not clear that helicopter EMS achieves this mortality or disability reduction. Reducing overtriage of patients with minor injury to helicopter EMS would improve its cost-effectiveness.

Indexed as

AdolescentAdultAgedAged, 80 and overAir AmbulancesAmbulancesCost-Benefit AnalysisFemaleHealth Care CostsHumansInjury Severity ScoreMaleMiddle AgedModels, TheoreticalQuality-Adjusted Life YearsUnited States

Identifiers

PMID23582619
PMCPMC3999834
OpenAlexW2072488643

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.