Evidence map›Paper›PMID 34757059›Full record

ArticleResuscitation2022

Are there disparities in the location of automated external defibrillators in England?

Terry P Brown, Gavin D Perkins, Christopher M Smith, Charles D Deakin, Rachael Fothergill

Abstract read
In one paragraph

Article in Resuscitation, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
–field-weighted citation impact
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.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Premier League Defibrillator Fund.British journal of sports medicine · 2025
    Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Out-of-Hospital Cardiac Arrest Ambulance Delay Zones and AED Placement in a Southern Brazilian City.International journal of environmental research and public health · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Observational
  20. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Terry P BrownNIHR Applied Research Collaboration West Midlands, Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK. Electronic address: t.brown.1@warwick.ac.uk.
Gavin D PerkinsNIHR Applied Research Collaboration West Midlands, Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK; Warwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK.
Christopher M SmithWarwick Clinical Trials Unit, University of Warwick, Coventry CV4 7AL, UK.
Charles D DeakinSouth Central Ambulance Service NHS Foundation Trust, Otterbourne, Winchester SO21 2RU, UK; University Hospital Southampton NHS Foundation Trust, Southampton S16 6YD, UK.
Rachael FothergillClinical Audit & Research Unit, Clinical & Quality Directorate, London Ambulance Service NHS Trust, HQ Annexe, 8-20 Pocock Street, London SE1 0BW, UK.

Funding

Department of Health 127368
6 · The paper itself

Abstract

backgroundEarly defibrillation is an essential element of the chain of survival for out-of-hospital cardiac arrest (OHCA). Public access defibrillation (PAD) programmes aim to place automated external defibrillators (AED) in areas with high OHCA incidence, but there is sometimes a mismatch between AED density and OHCA incidence.

objectivesThis study aimed to assess whether there were any disparities in the characteristics of areas that have an AED and those that do not in England.

methodsDetails of the location of AEDs registered with English Ambulance Services were obtained from individual services or internet sources. Neighbourhood characteristics of lower layer super output areas (LSOA) were obtained from the Office for National Statistics. Comparisons were made between LSOAs with and without a registered AED.

resultsAEDs were statistically more likely to be in LSOAs with a lower residential but higher workplace population density, with people predominantly from a white ethnic background and working in higher socio-economically classified occupations (p < 0.05). There was a significant correlation between AED coverage and the LSOA Index of Multiple Deprivation (IMD) (r = 0.79, p = 0.007), with only 27.4% in the lowest IMD decile compared to about 45% in highest. AED density varied significantly across the country from 0.82/km

conclusionsIn England, AEDs were disproportionately placed in more affluent areas, with a lower residential population density. This contrasts with locations where OHCAs have previously occurred. Future PAD programmes should give preference to areas of higher deprivation and be tailored to the local community.

Indexed as

Cardiopulmonary ResuscitationEmergency Medical ServicesOut-of-Hospital Cardiac ArrestDefibrillatorsHumansIncidenceAutomated external defibrillatorsBasic life supportHealth inequalityNeighbourhood characteristicsOut-of-hospital cardiac arrestPublic access defibrillation

Identifiers

PMID34757059
PMCPMC8786665

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Registered trials

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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.