Evidence map›Paper›PMID 25978617›Full record

ArticleEnvironmental health perspectives2015

Ambient Air Pollution and Newborn Size and Adiposity at Birth: Differences by Maternal Ethnicity (the Born in Bradford Study Cohort).

Anna Schembari, Kees de Hoogh, Marie Pedersen, Payam Dadvand, David Martinez, Gerard Hoek, Emily S Petherick, John Wright, Mark J Nieuwenhuijsen

Open access · diamondAbstract readComparative Study
In one paragraph

Article in Environmental health perspectives, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers, 8 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed, 8 pooled it
4.4field-weighted citation impact, top 6% 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

38 citing papers in PubMed, 8 syntheses or guidelines pooled it, 78 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
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  4. Adverse Birth Outcomes Related to NOInternational journal of environmental research and public health · 2020
    Pooled it
  5. Characteristics of cohort studies of long-term exposure to PMEnvironmental science and pollution research international · 2019
    Pooled it
  6. Pooled it
  7. Maternal fine particulate matter (PMEnvironmental science and pollution research international · 2019
    Pooled it
  8. Pooled it
  9. Article
  10. Kids' Environment and Health Cohort: Database Protocol: supplementary appendix.International journal of population data science · 2025
    Article
  11. Article
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  17. In-utero personal exposure to PMEnvironmental advances · 2022
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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

9 authors at 6 institutions in 5 countries.

Anna SchembariCentre for Research in Environmental Epidemiology (CREAL), Barcelona, Spain.
Kees de Hoogh
Marie Pedersen
Payam Dadvand
David Martinez
Gerard Hoek
Emily S Petherick
John Wright
Mark J Nieuwenhuijsen
Universitat Pompeu Fabra · ESBradford Teaching Hospitals NHS Foundation Trust · GBInserm · FRSwiss Tropical and Public Health Institute · CHUniversity of Bradford · GBUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundExposure to ambient air pollution has been associated with reduced size of newborns; however, the modifying effect of maternal ethnicity remains little explored among South Asians.

objectivesWe investigated ethnic differences in the association between ambient air pollution and newborn's size.

methodPregnant women were recruited between 2007 and 2010 for the Born in Bradford cohort study, in England. Exposures to particulate matter (≤ 10 μm, PM10; ≤ 2.5 μm, PM2.5), PM2.5 absorbance, and nitrogen oxides (NOx, NO2) were estimated using land-use regressions models. Using multivariate linear regression models, we evaluated effect modification by maternal ethnicity ("white British" or "Pakistani origin," self-reported) on the associations of air pollution and birth weight, head circumference, and triceps and subscapular skinfold thickness.

resultsA 5-μg/m3 increase in mean third trimester PM2.5 was associated with significantly lower birth weight and smaller head circumference in children of white British mothers (-43 g; 95% CI: -76, -10 and -0.28 cm; 95% CI: -0.39, -0.17, respectively), but not in children of Pakistani origin (9 g; 95% CI: -17, 35 and -0.08 cm; 95% CI: -0.17, 0.01, respectively) (p(int) = 0.03 and < 0.001). In contrast, PM2.5 was associated with significantly larger triceps and subscapular skinfold thicknesses in children of Pakistani origin (0.17 mm; 95% CI: 0.08, 0.25 and 0.21 mm; 95% CI: 0.12, 0.29, respectively), but not in white British children (-0.02 mm; 95% CI: -0.14, 0.01 and 0.06 mm; 95% CI: -0.06, 0.18, respectively) (p(int) = 0.06 and 0.11). Patterns of associations for PM10 and PM2.5 absorbance according to ethnicity were similar to those for PM2.5, but associations of the outcomes with NO2 and NOx were mostly nonsignificant in both ethnic groups.

conclusionsOur results suggest that associations of ambient PM exposures with newborn size and adiposity differ between white British and Pakistani origin infants. CITATION: Schembari A, de Hoogh K, Pedersen M, Dadvand P, Martinez D, Hoek G, Petherick ES, Wright J, Nieuwenhuijsen MJ. 2015. Ambient air pollution and newborn size and adiposity at birth: differences by maternal ethnicity (the Born in Bradford study cohort). Environ Health Perspect 123:1208-1215; http://dx.doi.org/10.1289/ehp.1408675.

Indexed as

AdiposityCephalometryAdultAir PollutantsAir PollutionBirth WeightCohort StudiesEnvironmental ExposureEthnicityFemaleHumansInfant, NewbornNitrogen OxidesPakistanParticulate MatterPregnancyAir PollutantsNitrogen OxidesParticulate Matter

Identifiers

PMID25978617
PMCPMC4629735
OpenAlexW2340814629

What OpenQuestion holds

Textmetadata
LicenceCC0
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.