Evidence map›Paper›PMID 21324870›Full record

ArticleCMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne2011

Maternal selenium status during early gestation and risk for preterm birth.

Margaret P Rayman, Hennie Wijnen, Huib Vader, Libbe Kooistra, Victor Pop

Open access · goldAbstract readComparative Study
In one paragraph

Article in CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
50citing papers in PubMed, 4 pooled it
3.8field-weighted citation impact, top 7% 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

50 citing papers in PubMed, 4 syntheses or guidelines pooled it, 114 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Evaluation of Fetal Exposures to Metals and Metalloids through Meconium Analyses: A Review.International journal of environmental research and public health · 2021
    Pooled it
  4. Pooled it
  5. Trial
  6. Trial
  7. Trial
  8. Trial
  9. Review
  10. Article
  11. Article
  12. Joint effects of prenatal PMFrontiers in public health · 2025
    Article
  13. Article
  14. Article
  15. Article
  16. Review
  17. Placental transcriptomic signatures of spontaneous preterm birth.American journal of obstetrics and gynecology · 2023
    Article
  18. Article
  19. Genetics, epigenetics, and transcriptomics of preterm birth.American journal of reproductive immunology (New York, N.Y. : 1989) · 2022
    Review
  20. 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

5 authors at 3 institutions in 2 countries.

Margaret P RaymanFaculty of Health and Medical Sciences, University of Surrey, Guildford, UK. m.rayman@surrey.ac.uk
Hennie Wijnen
Huib Vader
Libbe Kooistra
Victor Pop
Tilburg University · NLEindhoven University of Technology · NLUniversity of Surrey · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPreterm birth occurs in 5%-13% of pregnancies. It is a leading cause of perinatal mortality and morbidity and has adverse long-term consequences for the health of the child. Because of the role selenium plays in attenuating inflammation, and because low concentrations of selenium have been found in women with preeclampsia, we hypothesized that low maternal selenium status during early gestation would increase the risk of preterm birth.

methodsWhite Dutch women with a singleton pregnancy (n = 1197) were followed prospectively from 12 weeks' gestation. Women with thyroid disease or type 1 diabetes were excluded. At delivery, 1129 women had complete birth-outcome data. Serum concentrations of selenium were measured during the 12th week of pregnancy. Deliveries were classified as preterm or term, and preterm births were subcategorized as iatrogenic, spontaneous or the result of premature rupture of the membranes.

resultsOf the 60 women (5.3%) who had a preterm birth, 21 had premature rupture of the membranes and 13 had preeclampsia. The serum selenium concentration at 12 weeks' gestation was significantly lower among women who had a preterm birth than among those who delivered at term (mean 0.96 [standard deviation (SD) 0.14] μmol/L v. 1.02 [SD 0.13] μmol/L; t = 2.9, p = 0.001). Women were grouped by quartile of serum selenium concentration at 12 weeks' gestation. The number of women who had a preterm birth significantly differed by quartile (χ² = 8.01, 3 degrees of freedom], p < 0.05). Women in the lowest quartile of serum selenium had twice the risk of preterm birth as women in the upper three quartiles, even after adjustment for the occurrence of preeclampsia (adjusted odds ratio 2.18, 95% confidence interval 1.25-3.77).

interpretationHaving low serum selenium at the end of the first trimester was related to preterm birth and was independent of the mother having preeclampsia. Low maternal selenium status during early gestation may increase the risk of preterm premature rupture of the membranes, which is a major cause of preterm birth.

Indexed as

Pregnancy OutcomeAdultAnalysis of VarianceBiomarkersCohort StudiesFemaleGestational AgeHumansIncidenceLogistic ModelsPredictive Value of TestsPregnancyPremature BirthRisk AssessmentSeleniumSensitivity and SpecificityBiomarkersSelenium

Identifiers

PMID21324870
PMCPMC3060183
OpenAlexW2110594601

What OpenQuestion holds

Textmetadata
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.