Evidence map›Paper›PMID 29879567›Full record

ArticleEnvironmental research2018

Menstrual cycle characteristics as determinants of plasma concentrations of perfluoroalkyl substances (PFASs) in the Norwegian Mother and Child Cohort (MoBa study).

Alison B Singer, Kristina W Whitworth, Line S Haug, Azemira Sabaredzovic, Antti Impinen, Eleni Papadopoulou, Matthew P Longnecker

Open access · greenAbstract read
In one paragraph

Article in Environmental research, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 2 pooled it
2.0field-weighted citation impact, top 16% 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

20 citing papers in PubMed, 2 syntheses or guidelines pooled it, 31 citations in OpenAlex.

  1. Pooled it
  2. Determinants of maternal and neonatal PFAS concentrations: a review.Environmental health : a global access science source · 2023
    Pooled it
  3. Observational
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  15. Menstrual cycle length and modern living: a review.Current opinion in endocrinology, diabetes, and obesity · 2021
    Review
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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

7 authors at 4 institutions in 2 countries.

Alison B SingerThe Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA. Electronic address: alison_singer@unc.edu.
Kristina W WhitworthDepartment of Epidemiology, Human Genetics and Environmental Sciences, The University of Texas Health Science Center at Houston, School of Public Health in San Antonio, San Antonio, TX, USA; Southwest Center for Occupational and Environmental Health, The University of Texas Health Science Center at Houston, School of Public Health, Houston, TX, USA.
Line S HaugDepartment of Environmental Exposures and Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.
Azemira SabaredzovicDepartment of Environmental Exposures and Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.
Antti ImpinenDepartment of Toxicology and Risk Assessment, Norwegian Institute of Public Health, Oslo, Norway.
Eleni PapadopoulouDepartment of Environmental Exposures and Epidemiology, Norwegian Institute of Public Health, Oslo, Norway.
Matthew P LongneckerNational Institute for Environmental Health Sciences, National Institutes of Health, Department of Health and Human Services, Durham, NC, USA.
Norwegian Institute of Public Health · NONational Institute of Environmental Health Sciences · USThe University of Texas Health Science Center at San Antonio · USUniversity of North Carolina at Chapel Hill · US

Funding

Biostatstics for Research in Environmental HealthT32ES007018 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI Stephanie Engel, Rebecca Fry · 1985 to 2026
$31.3M
Gene-Environment Interactions in an Autism Birth CohortU01NS047537 · NINDS · COLUMBIA UNIVERSITY HEALTH SCIENCES · PI LIPKIN, W. IAN · 2003 to 2013
$27.0M
Prenatal Toxicant Exposure and Risk of Attention-Deficit Hyperactivity DisorderR01ES021777 · NIEHS · UNIV OF NORTH CAROLINA CHAPEL HILL · PI ENGEL, STEPHANIE · 2012 to 2016
$2.8M
SUPPORT SERVICES FOR EPIDEMIOLOGYN01ES085433 · NIEHS · SOCIAL AND SCIENTIFIC SYSTEMS, INC. · PI TER MAAT, JAMES L · 1998 to 2000
$2.6M
NIEHS NIH HHS N01 ES085433NIEHS NIH HHS R01 ES021777NIEHS NIH HHS T32 ES007018NINDS NIH HHS U01 NS047537
6 · The paper itself

Abstract

introductionPerfluoroalkyl substances (PFASs) are fluorinated organic compounds that have been used in a variety of industrial and consumer applications. Menstruation is implicated as a possible route of elimination for PFASs in women. The overall purpose of this study was to examine menstrual cycle characteristics as determinants of plasma PFAS concentrations in women.

methodsOur study sample consisted of 1977 pregnant women from the Norwegian Mother and Child Cohort (MoBa) study. The women were asked about menstrual cycle regularity in the year before the pregnancy and typical menstrual cycle length as well as other demographic and reproductive characteristics in a questionnaire completed during the pregnancy. Blood samples were collected around 17-18 weeks gestation and PFAS concentrations were measured in plasma. We examined the association between menstrual cycle characteristics and seven PFASs (perfluorooctanoic acid (PFOA), perfluorononanoic acid (PFNA), perfluorodecanoic acid (PFDA), perfluoroundecanoic acid (PFUnDA), perfluorohexane sulfonate (PFHxS), perfluoroheptane sulfonate (PFHpS), and perfluorooctane sulfonate (PFOS)) using multiple linear regression, adjusted for age, pre-pregnancy body mass index, smoking, education, income, parity, oral contraceptive use, inter-pregnancy interval, and breastfeeding duration.

resultsIrregular cycles were not associated with PFAS concentrations. Overall, we found no evidence of associations between menstrual cycle length and PFAS concentrations. In subgroup analyses we found some evidence, among parous women, of decreased PFHpS and PFOS with short menstrual cycles; we also found, among recent OC users (in the 12 months before the questionnaire) increased PFNA and PFUnDA with long cycle length. Limitations of our study include misclassification of menstrual cycle characteristics, small sample sizes in the sub-group analyses, and a lack of information on duration and volume of menses.

conclusionsIn the entire study sample, we found little evidence of menstrual cycle characteristics as determinants of PFAS concentrations. However, we observed some associations between cycle length and PFAS concentrations with some select PFAS compounds in subgroup analyses.

Indexed as

Menstrual CycleAlkanesulfonic AcidsEnvironmental PollutantsFemaleFluorocarbonsHumansNorwayPregnancyAlkanesulfonic AcidsEnvironmental PollutantsFluorocarbonsCycle lengthIrregularityMenstrualMoBaPerfluoroalkyl substances

Identifiers

PMID29879567
PMCPMC6174531
OpenAlexW2805233628

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.