Evidence map›Paper›PMID 21169127›Full record

ArticleEnvironmental health perspectives2011

Survival analysis of long-term exposure to different sizes of airborne particulate matter and risk of infant mortality using a birth cohort in Seoul, Korea.

Ji-Young Son, Michelle L Bell, Jong-Tae Lee

Abstract read
In one paragraph

Article in Environmental health perspectives, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing 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

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

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Infant Mortality Related to NOInternational journal of environmental research and public health · 2020
    Pooled it
  5. Article
  6. Article
  7. Association between fine particulate matter (PMEnvironmental epidemiology (Philadelphia, Pa.) · 2024
    Article
  8. Article
  9. Association between Long-Term Ambient PM2.5 Exposure and under-5 Mortality: A Scoping Review.International journal of environmental research and public health · 2023
    Article
  10. Article
  11. Review
  12. Understanding the Pathways from Prenatal and Post-Birth PMInternational journal of environmental research and public health · 2021
    Observational
  13. Article
  14. Ambient Air Pollution and Sudden Infant Death Syndrome in Korea: A Time-Stratified Case-Crossover Study.International journal of environmental research and public health · 2019
    Article
  15. Review
  16. The palm oil industry and noncommunicable diseases.Bulletin of the World Health Organization · 2019
    Review
  17. Article
  18. Air pollution modelling for birth cohorts: a time-space regression model.Environmental health : a global access science source · 2016
    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

3 authors.

Ji-Young SonSchool of Forestry and Environmental Studies, Yale University, New Haven, Connecticut, USA.
Michelle L Bell
Jong-Tae Lee

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSeveral studies suggest that airborne particulate matter (PM) is associated with infant mortality; however, most focused on short-term exposure to larger particles.

objectivesWe evaluated associations between long-term exposure to different sizes of particles [total suspended particles (TSP), PM ≤ 10 μm in aerodynamic diameter (PM₁₀), ≤ 10-2.5 μm (PM(10-2.5)), and ≤ 2.5 μm (PM(2.5))] and infant mortality in a cohort in Seoul, Korea, 2004-2007.

methodsThe study includes 359,459 births with 225 deaths. We applied extended Cox proportional hazards modeling with time-dependent covariates to three mortality categories: all causes, respiratory, and sudden infant death syndrome (SIDS). We calculated exposures from birth to death (or end of eligibility for outcome at 1 year of age) and pregnancy (gestation and each trimester) and treated exposures as time-dependent variables for subjects' exposure for each pollutant. We adjusted by sex, gestational length, season of birth, maternal age and educational level, and heat index. Each cause of death and exposure time frame was analyzed separately.

resultsWe found a relationship between gestational exposures to PM and infant mortality from all causes or respiratory causes for normal-birth-weight infants. For total mortality (all causes), risks were 1.44 (95% confidence interval, 1.06-1.97), 1.65 (1.18-2.31), 1.53 (1.22-1.90), and 1.19 (0.83-1.70) per interquartile range increase in TSP, PM₁₀, PM(2.5), and PM(10-2.5), respectively; for respiratory mortality, risks were 3.78 (1.18-12.13), 6.20 (1.50-25.66), 3.15 (1.26-7.85), and 2.86 (0.76-10.85). For SIDS, risks were 0.92 (0.33-2.58), 1.15 (0.38-3.48), 1.42 (0.71-2.87), and 0.57 (0.16-1.96), respectively.

conclusionsOur findings provide supportive evidence of an association of long-term exposure to PM air pollution with infant mortality.

Indexed as

Infant MortalityAdultFemaleHumansInfantKoreaMaleParticulate MatterPregnancyPrenatal Exposure Delayed EffectsProportional Hazards ModelsYoung AdultParticulate Matter

Identifiers

PMID21169127
PMCPMC3094428

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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.