Evidence map›Paper›PMID 31470855›Full record

ArticleEnvironmental health : a global access science source2019

Association of urinary concentrations of early pregnancy phthalate metabolites and bisphenol A with length of gestation.

Helen B Chin, Anne Marie Jukic, Allen J Wilcox, Clarice R Weinberg, Kelly K Ferguson, Antonia M Calafat, D Robert McConnaughey, Donna D Baird

Open access · goldAbstract read
In one paragraph

Article in Environmental health : a global access science source, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
2.3field-weighted citation impact, top 13% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 30 citations in OpenAlex.

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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

8 authors at 3 institutions in 1 country.

Helen B ChinEpidemiology Branch, National Institute of Environmental Health Sciences, 111 T W Alexander Drive, Mailstop A3-05, Research Triangle Park, NC, 27709, USA. helen.chin@nih.gov.ORCID 0000-0001-5090-6909
Anne Marie JukicEpidemiology Branch, National Institute of Environmental Health Sciences, 111 T W Alexander Drive, Mailstop A3-05, Research Triangle Park, NC, 27709, USA.
Allen J WilcoxEpidemiology Branch, National Institute of Environmental Health Sciences, 111 T W Alexander Drive, Mailstop A3-05, Research Triangle Park, NC, 27709, USA.
Clarice R WeinbergBiostatistics Branch, National Institute of Environmental Health Sciences, 111 T W Alexander Drive, Research Triangle Park, NC, 27709, USA.
Kelly K FergusonEpidemiology Branch, National Institute of Environmental Health Sciences, 111 T W Alexander Drive, Mailstop A3-05, Research Triangle Park, NC, 27709, USA.
Antonia M CalafatDivision of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Mail Stop F-17, 4770 Buford Highway, NE, Atlanta, GA, 30341-3724, USA.
D Robert McConnaugheyWestat, 1009 Slater Rd # 110, Durham, NC, 27703, USA.
Donna D BairdEpidemiology Branch, National Institute of Environmental Health Sciences, 111 T W Alexander Drive, Mailstop A3-05, Research Triangle Park, NC, 27709, USA.
National Institute of Environmental Health Sciences · USCenters for Disease Control and Prevention · USWestat (United States) · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Environmental Effects On FertilityZIAES049003 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI BAIRD, DONNA D. · 2009 to 2023
$3.3M
ENVIRONMENTAL EFFECTS ON FERTILITYZ01ES049003 · NIEHS · NATIONAL INSTITUTE OF ENVIRONMENTAL HEALTH SCIENCES · PI BAIRD, DONNA D. · 1990 to 2008
$1.1M
NCATS NIH HHS UL1 TR001863NIEHS NIH HHS Z01ES049003-23
6 · The paper itself

Abstract

backgroundEnvironmental exposure to phthalates and bisphenol A (BPA) may have endocrine disrupting effects that alter length of gestation. We assessed the association between the urinary concentrations of 11 phthalate metabolites and BPA with length of gestation in a cohort of women followed from before conception with daily 1st-morning urinary hormone measures that identified day of implantation.

methodsPre-implantation and post-implantation urinary phthalate metabolites and BPA concentrations were measured in pooled urine samples designed to limit single-measure variability due to the likely episodic nature of these exposures and the short half-life of these compounds. We estimated associations between these exposure biomarkers early in pregnancy with length of gestation from implantation to spontaneous birth. Cox proportional hazards models were used to estimate the hazard of birth among 125 naturally-conceived, singleton live births with censoring for medical interventions that artificially shortened pregnancy.

resultsHigher concentrations of mono (2-ethyl-5-hydroxyhexyl) phthalate (a metabolite of di (2-ethylhexyl) phthalate (DEHP)) during the pre-implantation window were associated with reduced probability of birth, i.e., longer gestations (hazard ratio (HR): 0.55, 95% CI: 0.35, 0.86; p = 0.01). The HR for the molar sum of the four DEHP metabolites measured showed a similar association (HR: 0.67, 95% CI: 0.43, 1.05). Higher concentrations of mono (3-carboxypropyl) phthalate (MCPP), a non-specific metabolite of several high molecular-weight phthalates, measured post-implantation were associated with increased risk of earlier birth, i.e. shorter length of gestation, HR: 1.59, CI: 1.02, 2.49.

conclusionsEarly gestational exposure to DEHP and possibly other high-molecular weight phthalates, (as reflected by urinary MCPP concentrations) may influence the length of pregnancy. Such effects could have consequences for neonatal and maternal health.

Indexed as

AdultBenzhydryl CompoundsBisphenol A CompoundsCohort StudiesEndocrine DisruptorsEnvironmental ExposureEnvironmental PollutantsFemaleHumansPhenolsPhthalic AcidsPregnancyBenzhydryl Compoundsbisphenol ABisphenol A CompoundsEndocrine DisruptorsEnvironmental PollutantsPhenolsphthalic acidPhthalic AcidsDeliveryPregnancyPregnancy length

Identifiers

PMID31470855
PMCPMC6717338
OpenAlexW2971082831

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.