Evidence map›Paper›PMID 30560301›Full record

ArticleEuropean journal of nutrition2020

Effect of Vitamin A status during pregnancy on maternal anemia and newborn birth weight: results from a cohort study in the Western Brazilian Amazon.

Paulo A R Neves, Marcia C Castro, Clariana V R Oliveira, Maira B Malta, Bárbara H Lourenço, Marly A Cardoso, MINA-Brazil Study Group

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In one paragraph

Article in European journal of nutrition, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed, 1 pooled it
2.0field-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

16 citing papers in PubMed, 1 synthesis or guideline pooled it, 28 citations in OpenAlex.

  1. Pooled it
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  5. Genetic predicted causal inferences between antioxidants and birth weight.Journal of clinical biochemistry and nutrition · 2024
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  13. Vitamin A Requirements in Pregnancy and Lactation.Current developments in nutrition · 2020
    Review
  14. [Relationship of plasma vitamin A levels between neonates and pregnant women in third trimester].Beijing da xue xue bao. Yi xue ban = Journal of Peking University. Health sciences · 2020
    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

7 authors at 2 institutions in 2 countries.

Paulo A R NevesDepartment of Nutrition, School of Public Health, University of São Paulo, Avenida Doutor Arnaldo, 715, 01246-904, São Paulo, Brazil.ORCID http://orcid.org/0000-0002-1200-4725
Marcia C CastroDepartment of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, 02115, Boston, USA.ORCID http://orcid.org/0000-0003-4606-2795
Clariana V R OliveiraDepartment of Global Health and Population, Harvard T.H. Chan School of Public Health, 677 Huntington Avenue, 02115, Boston, USA.ORCID http://orcid.org/0000-0001-9987-9948
Maira B MaltaDepartment of Nutrition, School of Public Health, University of São Paulo, Avenida Doutor Arnaldo, 715, 01246-904, São Paulo, Brazil.ORCID http://orcid.org/0000-0003-4993-1589
Bárbara H LourençoDepartment of Nutrition, School of Public Health, University of São Paulo, Avenida Doutor Arnaldo, 715, 01246-904, São Paulo, Brazil.ORCID http://orcid.org/0000-0002-2006-674X
Marly A CardosoDepartment of Nutrition, School of Public Health, University of São Paulo, Avenida Doutor Arnaldo, 715, 01246-904, São Paulo, Brazil. marlyac@usp.br.ORCID http://orcid.org/0000-0003-0973-3908
MINA-Brazil Study Group
Universidade de São Paulo · BRBoston University · US

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico 407255/2013-3Coordenação de Aperfeiçoamento de Pessoal de Nível Superior PDSE - 88881.133704/2016-01Fundação de Amparo à Pesquisa do Estado de São Paulo 2016/00270-6
6 · The paper itself

Abstract

purposeInadequate Vitamin A (VA) status during pregnancy has been associated with maternal anemia and suboptimal newborn birth weight (BW). We assessed the effect of gestational serum retinol and β-carotene (µmol/L), in different moments during pregnancy, on maternal hemoglobin (Hb, g/L) and anemia (Hb < 110.0 g/L) at delivery, and newborn BW (kg).

methodsIn a prospective cohort study in Cruzeiro do Sul, Western Brazilian Amazon, biomarkers of the VA status were assessed in the second and third trimesters in pregnancy. Serum retinol and β-carotene were analyzed considering their effects in each and in both assessments (combined VA status), and the difference of serum values between assessments. Multiple linear and Poisson regression models were used with a hierarchical selection of covariates.

resultsA total of 488 mother-newborn pairs were surveyed. Combined VA deficiency status increased the risk for maternal anemia (adjusted prevalence ratio: 1.39; 95% CI 1.05-1.84), and was negatively associated with maternal Hb (β - 3.30 g/L; 95% CI - 6.4, - 0.20) and newborn BW (β - 0.10 kg; 95% CI - 0.20, - 0.00), adjusted for socioeconomic, environmental, obstetric, and antenatal characteristics, and nutritional indicators. However, the association for newborn BW was no longer significant after further adjustment for plasma ferritin. There were no significant associations between serum β-carotene and the outcomes studied.

conclusionPoor serum retinol status throughout pregnancy was associated with maternal anemia at delivery in Amazonian women. The current World Health Organization protocols for supplementation during antenatal care should consider VA status for planning recommendations in different scenarios.

Indexed as

Birth WeightAdultAnemiaBrazilCohort StudiesFemaleHumansInfant, NewbornMaleMothersPregnancyPregnancy ComplicationsProspective StudiesVitamin AVitamin A DeficiencyVitamin AAmazonAnemiaBirth weightHemoglobinPregnancyVitamin A

Identifiers

PMID30560301
OpenAlexW2905265493

What OpenQuestion holds

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Registered trials

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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.