Evidence map›Paper›PMID 32102669›Full record

ArticleBMC medicine2020

Estimating the burden of iron deficiency among African children.

John Muthii Muriuki, Alexander J Mentzer, Emily L Webb, Alireza Morovat, Wandia Kimita, Francis M Ndungu, Alex W Macharia, Rosie J Crane, James A Berkley, Swaib A Lule and 12 more

Open access · goldAbstract read
In one paragraph

Article in BMC medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 48 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
48citing papers in PubMed, 4 pooled it
5.7field-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

48 citing papers in PubMed, 4 syntheses or guidelines pooled it, 75 citations in OpenAlex.

  1. Pooled it
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  3. Iron Deficiency Is Associated With Reduced Levels of Plasmodium falciparum-specific Antibodies in African Children.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2021
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  13. Boosting nutritional value: the role of iron fortification in meat and meat products.Biometals : an international journal on the role of metal ions in biology, biochemistry, and medicine · 2025
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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

22 authors at 8 institutions in 8 countries.

John Muthii MuriukiCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya. jmuriuki@kemri-wellcome.org.
Alexander J MentzerWellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
Emily L WebbMRC Tropical Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Alireza MorovatDepartment of Clinical Biochemistry, Oxford University Hospitals, Oxford, UK.
Wandia KimitaCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Francis M NdunguCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Alex W MachariaCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Rosie J CraneCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
James A BerkleyCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Swaib A LuleMRC Tropical Epidemiology Group, Department of Infectious Disease Epidemiology, London School of Hygiene and Tropical Medicine, London, UK.
Clare CutlandMedical Research Council: Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Sodiomon B SirimaGroupe de Recherche Action en Sante (GRAS), Ouagadougou 06, 06 BP 10248, Burkina Faso.
Amidou DiarraGroupe de Recherche Action en Sante (GRAS), Ouagadougou 06, 06 BP 10248, Burkina Faso.
Alfred B TionoGroupe de Recherche Action en Sante (GRAS), Ouagadougou 06, 06 BP 10248, Burkina Faso.
Philip BejonCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Shabir A MadhiMedical Research Council: Respiratory and Meningeal Pathogens Research Unit, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
Adrian V S HillWellcome Centre for Human Genetics, Nuffield Department of Medicine, University of Oxford, Oxford, UK.
Andrew M PrenticeMedical Research Council Unit The Gambia at London School of Hygiene and Tropical Medicine, Banjul, The Gambia.
Parminder S SuchdevDepartment of Pediatrics, Emory University and Emory Global Health Institute, Atlanta, GA, USA.
Alison M ElliottMedical Research Council/Uganda Virus Research Institute and London School of Hygiene and Tropical Medicine Uganda Research Unit, Entebbe, Uganda.
Thomas N WilliamsCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya.
Sarah H AtkinsonCentre for Geographic Medicine Research-Coast, KEMRI-Wellcome Trust Research Programme, Kenya Medical Research Institute (KEMRI), Kilifi, Kenya. satkinson@kemri-wellcome.org.ORCID 0000-0002-8360-4402
Kenya Medical Research Institute · KECentre for Human Genetics · GBGroupe de Recherche et d’Action sur le Foncier · BFLondon School of Hygiene & Tropical Medicine · GBUniversity of the Witwatersrand · ZAEmory University · USMRC Unit the Gambia · GMOxford University Hospitals NHS Trust · GB

Funding

Bill and Melinda Gates Foundation MC-A760-5QX00EPA EP-C-15-003FP7 Ideas: European Research Council 294557Medical 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/R010161/1Wellcome Trust 064693Wellcome Trust 079110Wellcome Trust 095778Wellcome Trust 106289/Z/14/ZWellcome Trust 110255/Z/15/ZWellcome Trust 202800/Z/16/ZWellcome Trust 203077/Z/16/Z
6 · The paper itself

Abstract

backgroundIron deficiency (ID) is a major public health burden in African children and accurate prevalence estimates are important for effective nutritional interventions. However, ID may be incorrectly estimated in Africa because most measures of iron status are altered by inflammation and infections such as malaria. Through the current study, we have assessed different approaches to the prediction of iron status and estimated the burden of ID in African children.

methodsWe assayed iron and inflammatory biomarkers in 4853 children aged 0-8 years from Kenya, Uganda, Burkina Faso, South Africa, and The Gambia. We described iron status and its relationship with age, sex, inflammation, and malaria parasitemia. We defined ID using the WHO guideline (ferritin < 12 μg/L or < 30 μg/L in the presence of inflammation in children < 5 years old or < 15 μg/L in children ≥ 5 years old). We compared this with a recently proposed gold standard, which uses regression-correction for ferritin levels based on the relationship between ferritin levels, inflammatory markers, and malaria. We further investigated the utility of other iron biomarkers in predicting ID using the inflammation and malaria regression-corrected estimate as a gold standard.

resultsThe prevalence of ID was highest at 1 year of age and in male infants. Inflammation and malaria parasitemia were associated with all iron biomarkers, although transferrin saturation was least affected. Overall prevalence of WHO-defined ID was 34% compared to 52% using the inflammation and malaria regression-corrected estimate. This unidentified burden of ID increased with age and was highest in countries with high prevalence of inflammation and malaria, where up to a quarter of iron-deficient children were misclassified as iron replete. Transferrin saturation < 11% most closely predicted the prevalence of ID according to the regression-correction gold standard.

conclusionsThe prevalence of ID is underestimated in African children when defined using the WHO guidelines, especially in malaria-endemic populations, and the use of transferrin saturation may provide a more accurate approach. Further research is needed to identify the most accurate measures for determining the prevalence of ID in sub-Saharan Africa.

Indexed as

AfricaAnemia, Iron-DeficiencyChildChild, PreschoolFemaleHumansInfantInfant, NewbornMaleAfrican childrenFerritinInflammationIron deficiencyMalariaTransferrin saturation

Identifiers

PMID32102669
PMCPMC7045745
OpenAlexW3004358962

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.