Evidence map›Paper›PMID 29153729›Full record

ArticleFertility and sterility2018

Ambient air pollution and the risk of pregnancy loss: a prospective cohort study.

Sandie Ha, Rajeshwari Sundaram, Germaine M Buck Louis, Carrie Nobles, Indulaxmi Seeni, Seth Sherman, Pauline Mendola

Open access · greenAbstract readMulticenter Study
In one paragraph

Article in Fertility and sterility, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed, 2 pooled it
6.1field-weighted citation impact, top 3% 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

40 citing papers in PubMed, 2 syntheses or guidelines pooled it, 113 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  6. Review
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  10. Associations of climatic factors with pregnancy loss in Nicosia, Cyprus.Journal of exposure science & environmental epidemiology · 2025
    Article
  11. CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2025
    Review
  12. Article
  13. Diagnosis and management of early pregnancy loss.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2024
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 1 country.

Sandie HaEpidemiology Branch, Division of Intramural Population Health Research, National Institute of Child Health and Human Development, Bethesda, Maryland; Department of Public Health, School of Social Sciences, Humanities and Arts, University of California, Merced, California.
Rajeshwari SundaramBiostatistics and Bioinformatics Branch, Bethesda, Maryland.
Germaine M Buck LouisOffice of the Director, Division of Intramural Population Health Research, National Institute of Child Health and Human Development, Bethesda, Maryland.
Carrie NoblesEpidemiology Branch, Division of Intramural Population Health Research, National Institute of Child Health and Human Development, Bethesda, Maryland.
Indulaxmi SeeniEpidemiology Branch, Division of Intramural Population Health Research, National Institute of Child Health and Human Development, Bethesda, Maryland.
Seth ShermanThe EMMES Corporation, Rockville, Maryland.
Pauline MendolaEpidemiology Branch, Division of Intramural Population Health Research, National Institute of Child Health and Human Development, Bethesda, Maryland. Electronic address: pauline.mendola@nih.gov.
Eunice Kennedy Shriver National Institute of Child Health and Human Development · USEmmes (United States) · USOffice of the Director · US

Funding

DETREMINANTS OF MALE AND FEMALE FECUNDITY AND FERTILITY RESEARCH SITESN01HD33355 · NICHD · PI SWEENEY, ANNE · 2007 to 2007
$6.2M
Air Quality and Reproductive HealthZIAHD008923 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI MENDOLA, PAULINE · 2012 to 2020
$3.2M
Longitudinal Investigation of Fertility and the EnvironmentZIAHD008770 · NICHD · EUNICE KENNEDY SHRIVER NATIONAL INSTITUTE OF CHILD HEALTH & HUMAN DEVELOPMENT · PI SUNDARAM, RAJESHWARI · 2009 to 2025
$2.2M
DETERMINANTS OF MALE AND FEMALE FECUNDITY AND FERTILITY-DATA COORDINATING CENTERN01HD33358 · NICHD · THE EMMES COMPANY, LLC · 2007 to 2009
$1.2M
DETERMINANTS OF MALE AND FEMALE FECUNDITY AND FERTILITY DATA COORDINAT-275033358N01HD033358 · NICHD · THE EMMES CORPORATION · 2004 to 2005
–
Intramural NIH HHS ZIA HD008770Intramural NIH HHS ZIA HD008923NICHD NIH HHS HHSN275200800002CNICHD NIH HHS HHSN275200800002INICHD NIH HHS N01HD33355NICHD NIH HHS N01HD33358
6 · The paper itself

Abstract

objectiveTo estimate the association of pregnancy loss with common air pollutant exposure. Ambient air pollution exposure has been linked to adverse pregnancy outcomes, but few studies have investigated its relationship with pregnancy loss.

designProspective cohort study.

settingNot applicable. PATIENT(S): A total of 343 singleton pregnancies in a multisite prospective cohort study with detailed protocols for ovulation and pregnancy testing. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Timing of incident pregnancy loss (from ovulation). RESULT(S): The incidence of pregnancy loss was 28% (n = 98). Pollutant levels at women's residences were estimated using modified Community Multiscale Air Quality models and averaged during the past 2 weeks (acute) and the whole pregnancy (chronic). Adjusted Cox proportional hazards models showed that an interquartile range increase in average whole pregnancy ozone (hazard ratio [HR] 1.12, 95% confidence interval [CI] 1.07-1.17) and particulate matter <2.5 μm (HR 1.13, 95% CI 1.03-1.24) concentrations were associated with faster time to pregnancy loss. Sulfate compounds also appeared to increase risk (HR 1.58, 95% CI 1.07-2.34). Last 2 weeks of exposures were not associated with loss. CONCLUSION(S): In a prospective cohort of couples trying to conceive, we found evidence that exposure to air pollution throughout pregnancy was associated with loss, but delineating specific periods of heightened vulnerability await larger preconception cohort studies with daily measured air quality.

Indexed as

Abortion, SpontaneousAdultAir PollutantsAir PollutionChi-Square DistributionEnvironmental ExposureEnvironmental MonitoringFemaleHumansIncidenceLogistic ModelsLongitudinal StudiesMichiganPregnancyPregnancy RatePregnancy TestsAir Pollutantsair pollutionfetal lossfine particulatePregnancy lossspontaneous abortion

Identifiers

PMID29153729
PMCPMC5758402
OpenAlexW2769932124

What OpenQuestion holds

Textmetadata
LicenceTDM
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.