Evidence map›Paper›PMID 23566138›Full record

ArticleEnvironmental health : a global access science source2013

Ozone is associated with cardiopulmonary and stroke emergency hospital visits in Reykjavík, Iceland 2003-2009.

Hanne Krage Carlsen, Bertil Forsberg, Kadri Meister, Thorarinn Gíslason, Anna Oudin

Abstract read
In one paragraph

Article in Environmental health : a global access science source, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 4 pooled it
–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

18 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
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  7. Article
  8. Air Pollution and Ischaemic Stroke.Annals of Indian Academy of Neurology · 2022
    Article
  9. Short-Term Effects of Low-Level Ambient Air NOInternational journal of environmental research and public health · 2022
    Article
  10. Cold Climate Impact on Air-Pollution-Related Health Outcomes: A Scoping Review.International journal of environmental research and public health · 2022
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  11. Article
  12. Article
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  14. Gaseous Air Pollution and the Risk for Stroke Admissions: A Case-Crossover Study in Beijing, China.International journal of environmental research and public health · 2017
    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

5 authors.

Hanne Krage CarlsenCentre of Public Health, University of Iceland, Stapi v/Hringbraut, Reykjavik, 101, Iceland. hkc1@hi.is
Bertil Forsberg
Kadri Meister
Thorarinn Gíslason
Anna Oudin

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAir pollution exposure is associated with hospital admissions and emergency room visits for cardiopulmonary disease and stroke. Iceland's capital area, Reykjavik, has generally low air pollution levels, but traffic and natural sources contribute to pollution levels. The objective of this study was to investigate temporal associations between emergency hospital visits and air pollutants ozone (O3), nitrogen dioxide (NO2), and particulate matter (PM10) in the Icelandic capital area.

methodsWe constructed a time series of the daily number of adults who visited the emergency room, or were acutely admitted for stroke or cardiorespiratory causes to Landspitali University Hospital 1 January 2003 - 31 December 2009 from the hospital in-patient register. We used generalized additive models assuming Poisson distribution, to analyze the daily emergency hospital visits as a function of the pollutant levels, and adjusted for meteorological variables, day of week, and time trend with splines.

resultsDaily emergency hospital visits increased 3.9% (95% confidence interval (CI) 1.7-6.1%) per interquartile (IQR) change in average O3 the same and two previous days. For females, the increase was 7.8% (95% CI 3.6-12.1) for elderly (70+), the increase was 3.9% (95% CI 0.6-7.3%) per IQR increase of NO2. There were no associations with PM10.

conclusionsWe found an increase in daily emergency hospital visits associated with O3, indicating that low-level exposure may trigger cardiopulmonary events or stroke.

Indexed as

Environmental ExposureAdultAgedAir PollutantsCardiovascular DiseasesComorbidityEmergency Service, HospitalEnvironmental MonitoringFemaleHospitalizationHumansIcelandIncidenceMaleMiddle AgedNitrogen DioxideAir PollutantsNitrogen DioxideOzoneParticulate Matter

Identifiers

PMID23566138
PMCPMC3639138

What OpenQuestion holds

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LicenceCC BY
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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.