Evidence map›Paper›PMID 35405984›Full record

ArticleNutrients2022

Vitamin D Deficiency and Its Association with Iron Deficiency in African Children.

Reagan M Mogire, John Muthii Muriuki, Alireza Morovat, Alexander J Mentzer, Emily L Webb, Wandia Kimita, Francis M Ndungu, Alex W Macharia, Clare L Cutland, Sodiomon B Sirima and 11 more

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed, 1 pooled it
5.5field-weighted citation impact, top 3% 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

21 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

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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

21 authors at 10 institutions in 7 countries.

Reagan M MogireCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.ORCID 0000-0001-6454-1613
John Muthii MuriukiCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.ORCID 0000-0003-4369-9547
Alireza MorovatDepartment of Clinical Biochemistry, Oxford University Hospitals, Oxford OX3 9DU, UK.ORCID 0000-0002-5832-7992
Alexander J MentzerWellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford OX3 7BN, UK.
Emily L WebbMedical Research Council (MRC) International Statistics and Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK.
Wandia KimitaCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.
Francis M NdunguCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.
Alex W MachariaCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.
Clare L CutlandAfrican Leadership in Vaccinology Expertise (Alive), Faculty of Health Sciences, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa.
Sodiomon B SirimaGroupe de Recherche Action en Sante (GRAS), Ouagadougou 06 BP 10248, Burkina Faso.
Amidou DiarraGroupe de Recherche Action en Sante (GRAS), Ouagadougou 06 BP 10248, Burkina Faso.
Alfred B TionoGroupe de Recherche Action en Sante (GRAS), Ouagadougou 06 BP 10248, Burkina Faso.ORCID 0000-0002-5104-3946
Swaib A LuleMedical Research Council (MRC) International Statistics and Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London WC1E 7HT, UK.ORCID 0000-0002-6271-2033
Shabir A MadhiSouth African Medical Research Council Vaccines and Infectious Diseases Analytics Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa.ORCID 0000-0002-7629-0636
Andrew M PrenticeMRC Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul P.O. Box 273, The Gambia.ORCID 0000-0001-5389-451X
Philip BejonCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.
John M PettiforSouth African Medical Research Council/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, University of the Witwatersrand, R68 Old Potchefstroom Road, Bertsham, Johannesburg 2050, South Africa.ORCID 0000-0003-1155-0334
Alison M ElliottMedical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, Entebbe P.O. Box 49, Uganda.
Adebowale AdeyemoCentre for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD 20891-5635, USA.
Thomas N WilliamsCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.
Sarah H AtkinsonCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), P.O. Box 230, Kilifi 80108, Kenya.ORCID 0000-0002-8360-4402
Kenya Medical Research Institute · KEGroupe de Recherche et d’Action sur le Foncier · BFLondon School of Hygiene & Tropical Medicine · GBSouth African Medical Research Council · ZACentre for Human Genetics · GBMRC Unit the Gambia · GMNational Institutes of Health · USOxford University Hospitals NHS Trust · GBUniversity of London · GBUniversity of the Witwatersrand · ZA

Funding

Developing Excellence in Leadership, Training and Science DEL-15-003Intramural Research Program of the National Institutes of Health in the Center for Research on Genomics and Global Health (CRGGH) 1ZIAHG200362Medical Research Council MC_PC_MR/R020183/1Medical Research Council MC_U123292699Medical Research Council MC_UU_00026/3Medical Research Council MC_UU_00027/5Medical Research Council MR/R010161/1Medical Research Council U1232661351, U105960371, MC-A760-5QX00Wellcome Trust 110255,202800,106289,064693, 079110,095778,203077Wellcome Trust 202800/Z/16/Z
6 · The paper itself

Abstract

Vitamin D regulates the master iron hormone hepcidin, and iron in turn alters vitamin D metabolism. Although vitamin D and iron deficiency are highly prevalent globally, little is known about their interactions in Africa. To evaluate associations between vitamin D and iron status we measured markers of iron status, inflammation, malaria parasitemia, and 25-hydroxyvitamin D (25(OH)D) concentrations in 4509 children aged 0.3 months to 8 years living in Kenya, Uganda, Burkina Faso, The Gambia, and South Africa. Prevalence of iron deficiency was 35.1%, and prevalence of vitamin D deficiency was 0.6% and 7.8% as defined by 25(OH)D concentrations of <30 nmol/L and <50 nmol/L, respectively. Children with 25(OH)D concentrations of <50 nmol/L had a 98% increased risk of iron deficiency (OR 1.98 [95% CI 1.52, 2.58]) compared to those with 25(OH)D concentrations >75 nmol/L. 25(OH)D concentrations variably influenced individual markers of iron status. Inflammation interacted with 25(OH)D concentrations to predict ferritin levels. The link between vitamin D and iron status should be considered in strategies to manage these nutrient deficiencies in African children.

Indexed as

Iron DeficienciesVitamin D DeficiencyBiomarkersChildHumansInflammationIronPrevalenceSouth AfricaVitamin DVitaminsBiomarkersIronVitamin DVitaminsAfricaanemiachildrenferritinhemoglobinhepcidinironiron deficiencytransferrin saturationVitamin D deficiency

Identifiers

PMID35405984
PMCPMC9002534
OpenAlexW4220824028

What OpenQuestion holds

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LicenceCC BY
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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.