Evidence map›Paper›PMID 24758249›Full record

ArticleBMC pregnancy and childbirth2014

Seasonal ambient air pollution correlates strongly with spontaneous abortion in Mongolia.

Davaasambuu Enkhmaa, Nicole Warburton, Badrakh Javzandulam, Jadambajav Uyanga, Yarinpil Khishigsuren, Sereeter Lodoysamba, Shonkuuz Enkhtur, David Warburton

Abstract read
In one paragraph

Article in BMC pregnancy and childbirth, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 46 papers.

0numbers the graph read from it
0cells of the map it votes in
46citing 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

46 citing papers in PubMed.

  1. Article
  2. Review
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  7. Article
  8. Nanoparticles at the maternal-fetal interface.Molecular and cellular endocrinology · 2023
    Review
  9. Article
  10. Article
  11. Maternal Exposure to PMCirculation · 2023
    Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Health and the Megacity: Urban Congestion, Air Pollution, and Birth Outcomes in Brazil.International journal of environmental research and public health · 2022
    Article
  17. Article
  18. Article
  19. Review
  20. 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

8 authors.

Davaasambuu Enkhmaa
Nicole Warburton
Badrakh Javzandulam
Jadambajav Uyanga
Yarinpil Khishigsuren
Sereeter Lodoysamba
Shonkuuz Enkhtur
David WarburtonThe Lifespan Environmental Pollution Global Impact Center at The Saban Research Institute, Children's Hospital of Los Angeles, 4650 Sunset Boulevard MS35, Los Angeles, CA 90027, USA. dwarburton@chla.usc.edu.

Funding

NIEHS NIH HHS 1D43ES0228620
6 · The paper itself

Abstract

backgroundAir pollution is a major health challenge worldwide and has previously been strongly associated with adverse reproductive health. This study aimed to examine the association between spontaneous abortion and seasonal variation of air pollutants in Ulaanbaatar, Mongolia.

methodsMonthly average O3, SO2, NO2, CO, PM10 and PM2.5 levels were measured at Mongolian Government Air Quality Monitoring stations. The medical records of 1219 women admitted to the hospital due to spontaneous abortion between 2009-2011 were examined retrospectively. Fetal deaths per calendar month from January-December, 2011 were counted and correlated with mean monthly levels of various air pollutants by means of regression analysis.

resultsRegression of ambient pollutants against fetal death as a dose-response toxicity curve revealed very strong dose-response correlations for SO2 r > 0.9 (p < 0.001) while similarly strongly significant correlation coefficients were found for NO2 (r > 0.8), CO (r > 0.9), PM10 (r > 0.9) and PM2.5 (r > 0.8), (p < 0.001), indicating a strong correlation between air pollution and decreased fetal wellbeing.

conclusionThe present study identified alarmingly strong statistical correlations between ambient air pollutants and spontaneous abortion. Further studies need to be done to examine possible correlations between personal exposure to air pollutants and pregnancy loss.

Indexed as

Fetal DeathAbortion, SpontaneousAdolescentAdultAir PollutantsAir PollutionCarbon MonoxideFemaleHumansMongoliaNitrogen DioxideOzoneParticulate MatterPregnancyRetrospective StudiesSeasonsAir PollutantsCarbon MonoxideNitrogen DioxideOzoneParticulate MatterSulfur Dioxide

Identifiers

PMID24758249
PMCPMC4024019

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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.