Evidence map›Paper›PMID 27821597›Full record

Observational studyBMJ open2016

Are sociodemographic characteristics associated with spatial variation in the incidence of OHCA and bystander CPR rates? A population-based observational study in Victoria, Australia.

Lahn D Straney, Janet E Bray, Ben Beck, Stephen Bernard, Marijana Lijovic, Karen Smith

Abstract readObservational Study
In one paragraph

Observational study in BMJ open, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

14 citing papers in PubMed.

  1. Article
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  4. The association of depression and patient and resuscitation characteristics with survival after out-of-hospital cardiac arrest: a cohort study.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2024
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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

6 authors.

Lahn D StraneyDepartment of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.ORCID 0000-0002-2615-2366
Janet E BrayDepartment of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.
Ben BeckDepartment of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.ORCID 0000-0003-3262-5956
Stephen BernardDepartment of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.ORCID 0000-0002-6501-9576
Marijana LijovicDepartment of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.
Karen SmithDepartment of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundRates of out-of-hospital cardiac arrest (OHCA) and bystander cardiopulmonary resuscitation (CPR) have been shown to vary considerably in Victoria. We examined the extent to which this variation could be explained by the sociodemographic and population health characteristics of the region.

methodsUsing the Victorian Ambulance Cardiac Arrest Registry, we extracted OHCA cases occurring between 2011 and 2013. We restricted the calculation of bystander CPR rates to those arrests that were witnessed by a bystander. To estimate the level of variation between Victorian local government areas (LGAs), we used a two-stage modelling approach using random-effects modelling.

resultsBetween 2011 and 2013, there were 15 830 adult OHCA in Victoria. Incidence rates varied across the state between 41.9 to 104.0 cases/100 000 population. The proportion of the population over 65, socioeconomic status, smoking prevalence and education level were significant predictors of incidence in the multivariable model, explaining 93.9% of the variation in incidence among LGAs. Estimates of bystander CPR rates for bystander witnessed arrests varied from 62.7% to 73.2%. Only population density was a significant predictor of rates in a multivariable model, explaining 73% of the variation in the odds of receiving bystander CPR among LGAs.

conclusionsOur results show that the regional characteristics which underlie the variation seen in rates of bystander CPR may be region specific and may require study in smaller areas. However, characteristics associated with high incidence and low bystander CPR rates can be identified and will help to target regions and inform local interventions to increase bystander CPR rates.

Indexed as

AdultAgedCardiopulmonary ResuscitationEducational StatusFemaleHumansIncidenceMaleMiddle AgedOut-of-Hospital Cardiac ArrestRegression AnalysisRisk FactorsSmokingSocioeconomic FactorsVictoriaEPIDEMIOLOGY

Identifiers

PMID27821597
PMCPMC5129006

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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.