Evidence map›Paper›PMID 34223313›Full record

ArticleResuscitation plus2020

Pre-hospital factors and survival after out-of-hospital cardiac arrest according to population density, a nationwide study.

Sidsel G Møller, Shahzleen Rajan, Steen Møller-Hansen, Kristian Kragholm, Kristian B Ringgren, Fredrik Folke, Carolina Malta Hansen, Freddy K Lippert, Lars Køber, Gunnar Gislason and 2 more

Open access · goldAbstract read
In one paragraph

Article in Resuscitation plus, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.5field-weighted citation impact, top 16% 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.

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

7 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Article
  3. Predictors of Mortality in Out-of-hospital Cardiac Arrest (OHCA) Patients: A Retrospective Cross-sectional Study from the Sultanate of Oman.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2024
    Article
  4. Article
  5. Article
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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

12 authors at 4 institutions in 1 country.

Sidsel G MøllerDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
Shahzleen RajanDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
Steen Møller-HansenUnit of Epidemiology and Biostatistics, Aalborg University Hospital, Aalborg, Denmark.
Kristian KragholmDepartment of Cardiology, North Denmark Regional Hospital & Aalborg University Hospital, Denmark.
Kristian B RinggrenDepartment of Cardiology, North Denmark Regional Hospital & Aalborg University Hospital, Denmark.
Fredrik FolkeDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
Carolina Malta HansenDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
Freddy K LippertEmergency Medical Services Copenhagen, University of Copenhagen, Denmark.
Lars KøberThe Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.
Gunnar GislasonDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
Christian Torp-PedersenDepartment of Cardiology and Clinical Investigation, Nordsjaellands Hospital, Hillerød, Denmark.
Mads WissenbergDepartment of Cardiology, Copenhagen University Hospital Herlev and Gentofte, Hellerup, Denmark.
University of Copenhagen · DKAalborg University Hospital · DKGentofte Hospital · DKNordsjællands Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

aimThis study aimed to examine the impact of population density on bystander cardiopulmonary resuscitation (CPR) and survival after out-of-hospital cardiac arrest (OHCA).

methodsThrough the Danish Cardiac Arrest Registry (2001-2013), OHCAs ≥18 years of presumed cardiac cause were identified, and divided according to the OHCA location in four population density groups (inhabitants/km

results18,248 OHCAs were identified. Patients in areas of high compared to low population density were older, more often female, had more comorbidities, more witnessed arrests (very high: 59.6% versus low: 55.0%), shorter response time (very high: 10 min versus low: 14 min), but less bystander CPR (very high: 34.3% versus low: 45.1%). Thirty-day survival was higher in areas of higher population density (very high: 10.2% vs. low 5.3%), also in best-cases of witnessed arrests with bystander CPR and response time <10 min (very high: 33.6% versus low: 13.8%). The same trends were found in adjusted analyses with lower odds for bystander CPR (odds ratio [OR] 0.55 95% confidence interval [CI] 0.46-0.66) and higher odds for 30-day survival (OR 2.78, 95%CI 1.95-3.96) in the highest population density areas compared to low.

conclusionsHaving an OHCA in higher populated areas were found associated with less bystander CPR, but higher survival. Identification of area-related factors can help target future pre-hospital care.

Indexed as

Bystander CPROHCAPopulation densitySurvival

Identifiers

PMID34223313
PMCPMC8244249
OpenAlexW3096949778

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

Registered trials

None linked

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.