Evidence map›Paper›PMID 35063430›Full record

SynthesisEnvironmental research2022

Ambient air pollution and COVID-19 incidence during four 2020-2021 case surges.

Margo A Sidell, Zhanghua Chen, Brian Z Huang, Ting Chow, Sandrah P Eckel, Mayra P Martinez, Fred Lurmann, Duncan C Thomas, Frank D Gilliland, Anny H Xiang

Open access · hybridAbstract readMeta-Analysis
In one paragraph

Synthesis in Environmental research, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
4.2field-weighted citation impact, top 5% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 41 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Ambient Air Pollution and COVID-19 in California.Research report (Health Effects Institute) · 2026
    Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Observational
  11. Review
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Asbestos Exposure and Severity of COVID-19.International journal of environmental research and public health · 2022
    Article
  18. Article
  19. Review
  20. Proximity to livestock farms and COVID-19 in the Netherlands, 2020-2021.International journal of hygiene and environmental health · 2022
    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

10 authors at 3 institutions in 1 country.

Margo A SidellDepartment of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, CA, USA.
Zhanghua ChenDepartment of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Brian Z HuangDepartment of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, CA, USA; Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Ting ChowDepartment of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, CA, USA.
Sandrah P EckelDepartment of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Mayra P MartinezDepartment of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, CA, USA.
Fred LurmannSonoma Technology, Inc., Petaluma, CA, USA.
Duncan C ThomasDepartment of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Frank D GillilandDepartment of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA.
Anny H XiangDepartment of Research & Evaluation, Kaiser Permanente Southern California, Pasadena, CA, USA. Electronic address: anny.h.xiang@kp.org.
University of Southern California · USKaiser Permanente · USSonoma Technology (United States) · US

Funding

Translational Research Support CoreP30ES007048 · NIEHS · UNIVERSITY OF SOUTHERN CALIFORNIA · PI Joseph Leo Wiemels · 1996 to 2026
$46.4M
The Impact of Air Pollution Exposure on COVID-19 Severity and MortalityR01ES029963 · NIEHS · KAISER FOUNDATION RESEARCH INSTITUTE · PI MCCONNELL, ROB S, XIANG, ANNY H · 2019 to 2022
$3.3M
Multidisciplinary Training in Ethnic Diversity and Cancer DisparitiesT32CA229110 · NCI · UNIVERSITY OF HAWAII AT MANOA · PI HAIMAN, CHRISTOPHER ALAN, LE MARCHAND, LOIC · 2019 to 2023
$2.1M
Effects of air pollution and gestational diabetes on autismR56ES028121 · NIEHS · KAISER FOUNDATION RESEARCH INSTITUTE · PI XIANG, ANNY H · 2017 to 2017
$250k
NCI NIH HHS T32 CA229110NIEHS NIH HHS P30 ES007048NIEHS NIH HHS R01 ES029963NIEHS NIH HHS R56 ES028121
6 · The paper itself

Abstract

backgroundAir pollution exposure may make people more vulnerable to COVID-19 infection. However, previous studies in this area mostly focused on infection before May 2020 and long-term exposure.

objectiveTo assess both long-term and short-term exposure to air pollution and COVID-19 incidence across four case surges from 03/1/2020 to 02/28/2021.

methodsThe cohort included 4.6 million members from a large integrated health care system in southern California with comprehensive electronic medical records (EMR). COVID-19 cases were identified from EMR. Incidence of COVID-19 was computed at the census tract-level among members. Prior 1-month and 1-year averaged air pollutant levels (PM

resultsThe cohort included 446,440 COVID-19 cases covering 4609 census tracts. The pooled RRs (95% CI) of COVID-19 incidence associated with 1-year exposures to PM

conclusionLong-term PM

Indexed as

Air PollutantsAir PollutionCOVID-19Environmental ExposureHumansIncidenceParticulate MatterSARS-CoV-2Air PollutantsParticulate MatterAir pollutionCOVID-19IncidenceNO(2)O(3)PM(2.5)

Identifiers

PMID35063430
PMCPMC8767981
OpenAlexW4205399102

What OpenQuestion holds

Textmetadata
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.