Evidence map›Paper›PMID 23893927›Full record

ArticleBirth defects research. Part A, Clinical and molecular teratology2013

Evaluating the effects of maternal exposure to benzene, toluene, ethyl benzene, and xylene on oral clefts among offspring in Texas: 1999-2008.

Anushuya Ramakrishnan, Philip J Lupo, A J Agopian, Stephen H Linder, Thomas H Stock, Peter H Langlois, Elena Craft

Open access · greenAbstract read
In one paragraph

Article in Birth defects research. Part A, Clinical and molecular teratology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

7 citing papers in PubMed, 16 citations in OpenAlex.

  1. Environmental mechanisms of orofacial clefts.Birth defects research · 2020
    Review
  2. Article
  3. Hypospadias Risk from Maternal Residential Exposure to Heavy Metal Hazardous Air Pollutants.International journal of environmental research and public health · 2019
    Article
  4. Article
  5. Article
  6. Article
  7. Article
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

7 authors at 5 institutions in 1 country.

Anushuya RamakrishnanDivision of Epidemiology, Human Genetics and Environmental Sciences, University of Texas, School of Public Health, Houston, Texas 77030, USA.
Philip J Lupo
A J Agopian
Stephen H Linder
Thomas H Stock
Peter H Langlois
Elena Craft
The University of Texas Health Science Center at Houston · USBaylor College of Medicine · USEnvironmental Defense Fund · USTexas Department of State Health Services · USThe University of Texas at Austin · US

Funding

Texas Center for Birth Defects Research and PreventionU01DD000494 · DD · TEXAS STATE DEPT OF HEALTH SERVICES · PI CANFIELD, MARK A · 2009 to 2013
$3.9M
Air Toxics, Neighborhood Environment and Risk of Oral CleftsR03DE021739 · NIDCR · BAYLOR COLLEGE OF MEDICINE · PI LUPO, PHILIP · 2012 to 2013
$314k
NCBDD CDC HHS U01 DD000494NCBDD CDC HHS U01DD000494NIDCR NIH HHS 1R03DE02173901A1NIDCR NIH HHS R03 DE021739
6 · The paper itself

Abstract

backgroundThere is evidence from previous studies that maternal occupational exposure to hazardous air pollutants (HAPs) is positively associated with oral clefts; however, studies evaluating the association between residential exposure to these toxicants and oral clefts are lacking. Therefore, our goal was to conduct a case-control study examining the association between estimated maternal residential exposure to benzene, toluene, ethyl benzene, and xylene (BTEX) and the risk of oral clefts among offspring.

methodsData on 6045 nonsyndromic isolated oral cleft cases (3915 cleft lip with or without cleft palate [CL ± P] and 2130 nonsyndromic isolated cleft palate [CP] cases) delivered between 1999 and 2008 were obtained from the Texas Birth Defects Registry. The control group was a sample of unaffected live births, frequency matched to cases on year of birth. Census tract-level estimates of annual average exposures were obtained from the U.S. Environmental Protection Agency 2005 Hazardous Air Pollutant Exposure Model (HAPEM5) for each pollutant and assigned to each subject based on maternal residence during pregnancy. Logistic regression was used to assess the relationship between estimated maternal exposure to each pollutant (BTEX) separately and the risk of oral clefts in offspring.

resultsHigh estimated maternal exposure to benzene was not associated with oral clefts, compared with low estimated exposure (CL ± P adjusted OR = 0.95; 95% CI = 0.81 - 1.12; CP adjusted OR = 0.85; 95% CI = 0.67 - 1.09). Similar results were seen for the other pollutants.

conclusionIn our study, there was no evidence that maternal exposure to environmental levels of BTEX was associated with oral clefts.

Indexed as

Cleft LipCleft PalateAdultAir PollutantsBenzeneBenzene DerivativesBrainCase-Control StudiesEnvironmental ExposureFemaleHumansMaleMaternal ExposurePregnancyRiskTolueneAir PollutantsBenzeneBenzene DerivativesethylbenzeneTolueneXylenesbenzeneepidemiologyhazardous air pollutantsmaternal exposureoral clefts

Identifiers

PMID23893927
PMCPMC3771492
OpenAlexW1673822648

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.