Evidence map›Paper›PMID 34497075›Full record

ArticleBMJ open2021

Long-term exposure to particulate air pollution and black carbon in relation to natural and cause-specific mortality: a multicohort study in Sweden.

Johan Nilsson Sommar, Eva M Andersson, Niklas Andersson, Gerd Sallsten, Leonard Stockfelt, Petter Ls Ljungman, David Segersson, Kristina Eneroth, Lars Gidhagen, Peter Molnar and 11 more

Open access · goldAbstract read
In one paragraph

Article in BMJ open, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.2field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 32 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Black Carbon Air Pollution and Incident Mortality Among the Advance-Aged Adults in China: A Prospective Cohort Study.The journals of gerontology. Series A, Biological sciences and medical sciences · 2025
    Article
  6. Individual and joint exposures to PMScience China. Life sciences · 2024
    Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
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

21 authors at 8 institutions in 3 countries.

Johan Nilsson SommarSection of Sustainable Health, Department of Public Health and Clinical Medicine, Umea University, Umeå, Sweden johan.sommar@umu.se.ORCID 0000-0002-8854-498X
Eva M AnderssonOccupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of medicine, Sahlgrenska Academy, University of Gothenburg & Sahlgrenska University Hospital, Gothenburg, Sweden.
Niklas AnderssonInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Gerd SallstenOccupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of medicine, Sahlgrenska Academy, University of Gothenburg & Sahlgrenska University Hospital, Gothenburg, Sweden.
Leonard StockfeltOccupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of medicine, Sahlgrenska Academy, University of Gothenburg & Sahlgrenska University Hospital, Gothenburg, Sweden.
Petter Ls LjungmanInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
David SegerssonSwedish Meteorological and Hydrological Institute, Norrkoping, Sweden.
Kristina EnerothSLB-analys, Environment and Health Administration, Stockholm, Sweden.
Lars GidhagenSwedish Meteorological and Hydrological Institute, Norrkoping, Sweden.
Peter MolnarOccupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of medicine, Sahlgrenska Academy, University of Gothenburg & Sahlgrenska University Hospital, Gothenburg, Sweden.
Patrik WennbergFamily Medicine, Public Health and Clinical Medicine, Umeå University, Umeå, Sweden.
Annika RosengrenDepartment of Molecular and Clinical Medicine, Institute of Medicine, University of Gothenburg, Sahlgrenska University Hospital, Goteborg, Sweden.
Debora RizzutoAgeing Research Center, Department of Neurobiology, Care Sciences and Society, Karolinska Institutet and Stockholm University, Stockholm, Sweden.
Karin LeanderInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Anton LagerCentre for Epidemiology and Community Medicine, Stockholm County Council, Stockholm, Sweden.
Patrik Ke MagnussonDepartment of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.
Christer JohanssonSLB-analys, Environment and Health Administration, Stockholm, Sweden.
Lars BarregardOccupational and Environmental Medicine, Department of Public Health and Community Medicine, Institute of medicine, Sahlgrenska Academy, University of Gothenburg & Sahlgrenska University Hospital, Gothenburg, Sweden.
Tom BellanderInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Göran PershagenInstitute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
Bertil ForsbergSection of Sustainable Health, Department of Public Health and Clinical Medicine, Umea University, Umeå, Sweden.
Sahlgrenska University Hospital · SEKarolinska Institutet · SEStockholm University · SESwedish Meteorological and Hydrological Institute · SEUmeå University · SEDanderyds sjukhus · SEDay Family Medicine · USStockholm County Council · SE

Funding

DEMENTIA IN TWINSR01AG008724 · NIA · UNIVERSITY OF SOUTHERN CALIFORNIA · PI GATZ, MARGARET · 1990 to 2002
$1.4M
Gates Foundation INV-006576NIA NIH HHS R01 AG008724
6 · The paper itself

Abstract

objectivesTo estimate concentration-response relationships for particulate matter (PM) and black carbon (BC) in relation to mortality in cohorts from three Swedish cities with comparatively low pollutant levels.

settingCohorts from Gothenburg, Stockholm and Umeå, Sweden.

designHigh-resolution dispersion models were used to estimate annual mean concentrations of PM with aerodynamic diameter ≤10 µm (PM10) and ≤2.5 µm (PM2.5), and BC, at individual addresses during each year of follow-up, 1990-2011. Moving averages were calculated for the time windows 1-5 years (lag1-5) and 6-10 years (lag6-10) preceding the outcome. Cause-specific mortality data were obtained from the national cause of death registry. Cohort-specific HRs were estimated using Cox regression models and then meta-analysed including a random effect of cohort.

participantsDuring the study period, 7 340 cases of natural mortality, 2 755 cases of cardiovascular disease (CVD) mortality and 817 cases of respiratory and lung cancer mortality were observed among in total 68 679 individuals and 689 813 person-years of follow-up.

resultsBoth PM10 (range: 6.3-41.9 µg/m

conclusionThe results support an effect of long-term air pollution on natural mortality and mortality in CVD with high relative risks also at low exposure levels. These findings are relevant for future decisions concerning air quality policies.

Indexed as

Air PollutantsAir PollutionCarbonCause of DeathEnvironmental ExposureHumansParticulate MatterSwedenAir PollutantsCarbonParticulate Mattercardiac epidemiologyepidemiologypublic health

Identifiers

PMID34497075
PMCPMC8438896
OpenAlexW3196447381

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.