Evidence map›Paper›PMID 34951022›Full record

ArticlePaediatric and perinatal epidemiology2022

Extreme heat and its association with social disparities in the risk of spontaneous preterm birth.

Lara Cushing, Rachel Morello-Frosch, Alan Hubbard

Open access · greenAbstract read
PubMed Publisher
In one paragraph

Article in Paediatric and perinatal epidemiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 2 pooled it
3.0field-weighted citation impact, top 8% 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

25 citing papers in PubMed, 2 syntheses or guidelines pooled it, 51 citations in OpenAlex.

  1. Pooled it
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  12. Measuring Spatial Social Polarization in Public Health Research: A Scoping Review of Methods and Applications.Journal of urban health : bulletin of the New York Academy of Medicine · 2025
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  18. Hurricane Harvey and the risk of spontaneous preterm and early-term birth.Environmental epidemiology (Philadelphia, Pa.) · 2024
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors at 2 institutions in 1 country.

Lara CushingDepartment of Environmental Health Sciences, Fielding School of Public Health, University of California, Los Angeles, California, USA.ORCID https://orcid.org/0000-0003-0640-6450
Rachel Morello-FroschDepartment of Environmental Science, Policy & Management, University of California, Berkeley, California, USA.
Alan HubbardSchool of Public Health, University of California, Berkeley, California, USA.
University of California, Berkeley · USUniversity of California, Los Angeles · US

Funding

Alex Farrell Memorial Graduate FellowshipEnergy & Resources Group at the University of California, BerkeleyEPA 91744701Robert and Patricia Switzer Foundation
6 · The paper itself

Abstract

backgroundClimate change is increasing the frequency and intensity of heatwaves. Prior studies associate high temperature with preterm birth.

objectivesWe tested the hypotheses that acute exposure to extreme heat was associated with higher risk of live spontaneous preterm birth (≥20 and <37 completed weeks), and that risks were higher among people of colour and neighbourhoods with heat-trapping landcover or concentrated racialised economic disadvantage.

methodsWe conducted a retrospective cohort study of people giving birth between 2007 and 2011 in Harris County, Texas (Houston metropolitan area) (n = 198,013). Exposures were daily ambient apparent temperature (AT

resultsThe frequency of preterm birth was 10.3%. A quarter (26.8%) of people were exposed to AT

conclusionsAmbient heat was associated with spontaneous preterm birth, with stronger associations earlier in pregnancy and in racially and economically disadvantaged neighbourhoods, suggesting climate change may worsen existing social inequities in preterm birth rates.

Indexed as

Extreme HeatPremature BirthFemaleGestational AgeHot TemperatureHumansInfant, NewbornPregnancyRetrospective Studiesbirth outcomesclimate changeenvironmental justiceheatwavesegregationtemperature

Identifiers

PMID34951022
OpenAlexW4200556633

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.