Evidence map›Paper›PMID 30018406›Full record

ArticleJournal of exposure science & environmental epidemiology2018

A possible approach to improving the reproducibility of urinary concentrations of phthalate metabolites and phenols during pregnancy.

Mahsa M Yazdy, Brent A Coull, Joseph C Gardiner, Andrea Aguiar, Antonia M Calafat, Xiaoyun Ye, Susan L Schantz, Susan A Korrick

Abstract read
In one paragraph

Article in Journal of exposure science & environmental epidemiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
–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

29 citing papers in PubMed.

  1. Article
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  7. Single-cell RNA-seq reveals that granulosa cells are a target of phthalate toxicity in the ovary.Toxicological sciences : an official journal of the Society of Toxicology · 2025
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  8. Article
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  12. Predictors of Phthalate Metabolites Exposure among Healthy Pregnant Women in the United States, 2010-2015.International journal of environmental research and public health · 2023
    Article
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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.

Mahsa M YazdyChanning Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA.
Brent A CoullDepartment of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
Joseph C GardinerDepartment of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI, USA.
Andrea AguiarDepartment of Comparative Biosciences and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
Antonia M CalafatDivision of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Xiaoyun YeDivision of Laboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention, Atlanta, GA, USA.
Susan L SchantzDepartment of Comparative Biosciences and Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign, Urbana, IL, USA.
Susan A KorrickChanning Division of Network Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA. susan.korrick@channing.harvard.edu.

Funding

The HSPH Education and Research Center of Occupational Safety and HealthT42OH008416 · OH · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI CHRISTIANI, DAVID C · 2005 to 2025
$30.5M
Training Program in Environmental EpidemiologyT32ES007069 · NIEHS · HARVARD UNIVERSITY (SCH OF PUBLIC HLTH) · PI LADEN, FRANCINE · 1985 to 2024
$13.9M
Project 3: Endocrine Disruptors and Diet: Effects on the Developing Cortex P01ES022848 · NIEHS · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI SCHANTZ, SUSAN L · 2013 to 2018
$4.2M
Metal and Organochlorines Exposure: Impact on Adolescent Behavior and CognitionR01ES014864 · NIEHS · BRIGHAM AND WOMEN'S HOSPITAL · PI KORRICK, SUSAN A · 2006 to 2010
$3.3M
Project 4: Effects of Bisphenol A (BPA) on the Developing CortexP20ES018163 · NIEHS · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI JURASKA, JANICE M · 2010 to 2012
$988k
NIEHS NIH HHS P01 ES022848NIEHS NIH HHS P20 ES018163NIEHS NIH HHS R01 ES014864NIEHS NIH HHS T32 ES007069NIOSH CDC HHS T42 OH008416
6 · The paper itself

Abstract

In epidemiologic studies, classifying episodic exposures to chemicals with short half-lives, such as phthalates and phenols, is challenging. We assessed whether accounting for sources of variability unrelated to exposure pathways would improve the reproducibility of urine concentrations of select phthalate metabolites and phenols. In 2011, a subset of pregnant women (n = 19) enrolled in a prospective study provided first morning urine samples every 3-4 weeks between 16 and 36 weeks gestation. At the time of collection, we identified potential contributors to variations in urinary concentrations: weight gain, gestational age, time slept, time since awoke, time since last food/drink, and time since last void. We estimated intraclass correlation coefficients (ICCs) among repeat urine concentrations with and without adjustment for sources of variability using a random intercept linear mixed model. Concentrations of monoethyl phthalate, butyl, and propyl parabens were the most reproducible (ICCs: 0.68, 0.56, and 0.56, respectively). However, adjustment for potential sources of variability unrelated to exposure pathways did not materially improve reproducibility nor the ability of a single sample to predict exposure based on average biomarker concentrations across pregnancy. Future studies should carefully consider the exposure timeframe and the reliability of using biomarker concentrations from a single time point to represent exposures over pregnancy.

Indexed as

AdultBiomarkersEnvironmental ExposureEnvironmental MonitoringFemaleHumansIllinoisLinear ModelsPhenolsPhthalic AcidsPregnancyPregnant PeopleProspective StudiesReproducibility of ResultsSurveys and QuestionnairesYoung AdultBiomarkersPhenolsphthalic acidPhthalic AcidsChild exposure/healthEndocrine disruptorsPhenolsPhthalatesPregnancyPrenatal exposure

Identifiers

PMID30018406
PMCPMC6170163

What OpenQuestion holds

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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.