Evidence map›Paper›PMID 25533644›Full record

ArticleEnvironmental health : a global access science source2014

Perfluoroalkyl substances and time to pregnancy in couples from Greenland, Poland and Ukraine.

Kristian T Jørgensen, Ina O Specht, Virissa Lenters, Cathrine C Bach, Lars Rylander, Bo A G Jönsson, Christian H Lindh, Aleksander Giwercman, Dick Heederik, Gunnar Toft and 1 more

Open access · goldAbstract read
In one paragraph

Article in Environmental health : a global access science source, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 2 pooled it
2.5field-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

24 citing papers in PubMed, 2 syntheses or guidelines pooled it, 49 citations in OpenAlex.

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  11. Association between Perfluoroalkyl and Polyfluoroalkyl Substances and Women's Infertility, NHANES 2013-2016.International journal of environmental research and public health · 2022
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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

11 authors at 5 institutions in 3 countries.

Kristian T JørgensenDepartment of Occupational and Environmental Medicine, Bispebjerg Hospital, Copenhagen University Hospital, Copenhagen, Denmark. kristiantore@hotmail.com.
Ina O SpechtDepartment of Occupational and Environmental Medicine, Bispebjerg Hospital, Copenhagen University Hospital, Copenhagen, Denmark. ina.olmer.specht@regionh.dk.
Virissa LentersDivision of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands. V.C.Lenters@uu.nl.
Cathrine C BachPerinatal Epidemiology Research Unit, Aarhus University Hospital, Skejby, Denmark. cathrine_c_bach@hotmail.com.
Lars RylanderDivision of Occupational and Environmental Medicine, Lund University, Lund, Sweden. Lars.Rylander@med.lu.se.
Bo A G JönssonDivision of Occupational and Environmental Medicine, Lund University, Lund, Sweden. Bo_A.Jonsson@med.lu.se.
Christian H LindhDivision of Occupational and Environmental Medicine, Lund University, Lund, Sweden. Christian.Lindh@med.lu.se.
Aleksander GiwercmanReproductive Medicine Centre, Malmö University Hospital, Lund University, Malmö, Sweden. Aleksander.Giwercman@med.lu.se.
Dick HeederikDivision of Environmental Epidemiology, Institute for Risk Assessment Sciences, Utrecht University, Utrecht, The Netherlands. d.heederik@uu.nl.
Gunnar ToftDepartment of Occupational Medicine, Danish Ramazzini Center, Aarhus University Hospital, Aarhus, Denmark. gunntoft@rm.dk.
Jens Peter BondeDepartment of Occupational and Environmental Medicine, Bispebjerg Hospital, Copenhagen University Hospital, Copenhagen, Denmark. jpb@bbh.regionh.dk.
Lund University · SEAarhus University Hospital · DKBispebjerg Hospital · DKUtrecht University · NLCopenhagen University Hospital · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPerfluoroalkyl substances (PFAS) are suggested to affect human fecundity through longer time to pregnancy (TTP). We studied the relationship between four abundant PFAS and TTP in pregnant women from Greenland, Poland and Ukraine representing varying PFAS exposures and pregnancy planning behaviors.

methodsWe measured serum levels of perfluorooctanoic acid (PFOA), perfluorooctane sulfonate (PFOS), perfluorohexane sulfonic acid (PFHxS) and perfluorononanoic acid (PFNA) in 938 women from Greenland (448 women), Poland (203 women) and Ukraine (287 women). PFAS exposure was assessed on a continuous logarithm transformed scale and in country-specific tertiles. We used Cox discrete-time models and logistic regression to estimate fecundability ratios (FRs) and infertility (TTP >13 months) odds ratios (ORs), respectively, and 95% confidence intervals (CI) according to PFAS levels. Adjusted analyses of the association between PFAS and TTP were done for each study population and in a pooled sample.

resultsHigher PFNA levels were associated with longer TTP in the pooled sample (log-scale FR = 0.80; 95% CI 0.69-0.94) and specifically in women from Greenland (log-scale FR = 0.72; 95% CI 0.58-0.89). ORs for infertility were also increased in the pooled sample (log-scale OR = 1.53; 95% CI 1.08-2.15) and in women from Greenland (log-scale OR = 1.97; 95% CI 1.22-3.19). However, in a sensitivity analysis of primiparous women these associations could not be replicated. Associations with PFNA were weaker for women from Poland and Ukraine. PFOS, PFOA and PFHxS were not consistently associated with TTP.

conclusionsFindings do not provide consistent evidence that environmental exposure to PFAS is impairing female fecundity by delaying time taken to conceive.

Indexed as

Time-to-PregnancyAdultAlkanesulfonic AcidsCaprylatesEnvironmental PollutantsFamily CharacteristicsFatty AcidsFemaleFluorocarbonsGreenlandHumansMalePolandPregnancySulfonic AcidsUkraineAlkanesulfonic AcidsCaprylatesEnvironmental PollutantsFatty AcidsFluorocarbonsperfluorohexanesulfonic acidperfluoro-n-nonanoic acidperfluorooctane sulfonic acidperfluorooctanoic acidSulfonic Acids

Identifiers

PMID25533644
PMCPMC4391306
OpenAlexW2160568778

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.