ArticleJournal of neurotrauma2022
Association of Pre-Hospital Helicopter Transport with Reduced Mortality in Traumatic Brain Injury in Japan: A Nationwide Retrospective Cohort Study.
Article in Journal of neurotrauma, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 2 of them syntheses that pooled it.
What it found
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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.
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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
12 citing papers in PubMed, 2 syntheses or guidelines pooled it, 19 citations in OpenAlex.
- Helicopter EMS for scene response to head-injured patients: systematic review & meta-analysis.BMC emergency medicine · 2025Pooled it
- Survival and cost-effectiveness of helicopter versus ground emergency medical services: a systematic review and meta-analysis with meta-regression and trial sequential analysis.Scandinavian journal of trauma, resuscitation and emergency medicine · 2025Pooled it
- Mapping the internationally reported evidence on physician-staffed helicopter transport in Japan: a scoping review.BMJ open · 2026Article
- Assessment of clinical and logistical contribution in a Norwegian helicopter emergency medical service using integrated data: a retrospective observational study.Scandinavian journal of trauma, resuscitation and emergency medicine · 2026Observational
- Improving prediction accuracy of hospital arrival vital signs using a multi-output machine learning model: a retrospective study of JSAS-registry data.BMC emergency medicine · 2025Article
- Impact of physician-staffed ground emergency medical services-administered pre-hospital trauma care on in-hospital survival outcomes in Japan.European journal of trauma and emergency surgery : official publication of the European Trauma Society · 2024Article
- Trends in mortality rates and correlations between intracranial injuries and external causes: A Japanese population study.PloS one · 2024Article
- Pre-hospital endotracheal intubation in severe traumatic brain injury: ventilation targets and mortality-a retrospective analysis of 308 patients.Scandinavian journal of trauma, resuscitation and emergency medicine · 2023Article
- The forgotten cohort-lessons learned from prehospital trauma death: a retrospective cohort study.Scandinavian journal of trauma, resuscitation and emergency medicine · 2023Article
- Factors Associated with an Increase in On-Site Time of Pediatric Trauma Patients in a Prehospital Setting: A Nationwide Observational Study in Japan.Children (Basel, Switzerland) · 2022Article
- What's New in Emergencies Trauma and Shock - The Helicopter Paradox in Trauma Care: Does Faster Transport Necessarily Improve Survival?Journal of emergencies, trauma, and shockArticle
- The Ideal Trauma Transport Modality: Helicopter or Ground Ambulance? A Systematic Review and Meta-analysis.Journal of emergencies, trauma, and shockArticle
Corrections and comments
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Authors and funding
6 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Patients with traumatic brain injury (TBI) are severely injured patients who require timely, efficient, and specialized care. The effectiveness of helicopter emergency medical services (HEMS) for patients with TBI remains unclear. This study aimed to compare the mortality of patients with TBI transported by HEMS and ground ambulance using propensity score-matching analysis, and to analyze the effects of HEMS in various subpopulations. We conducted a retrospective analysis of the Japan Trauma Data Bank. The study period was from January 2004 to December 2018. The participants were divided into two groups: the helicopter group (patients transported by HEMS) and ground group (patients transported by ground ambulance). The principal outcome was death at hospital discharge. In total, 58,532 patients were eligible for analysis (ground group,
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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.