Evidence map›Paper›PMID 30517728›Full record

ArticleThe Journal of nutrition2018

Sickle Cell and α+-Thalassemia Traits Influence the Association between Ferritin and Hepcidin in Rural Kenyan Children Aged 14-26 Months.

Kendra A Byrd, Thomas N Williams, Audrie Lin, Amy J Pickering, Benjamin F Arnold, Charles D Arnold, Marion Kiprotich, Holly N Dentz, Sammy M Njenga, Gouthami Rao and 3 more

Registry-linked trialOpen access · hybridAbstract read
In one paragraph

Article in The Journal of nutrition, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01704105 (WASH Benefits Kenya), which is not on this map. Cited by 9 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 1 pooled it
0.3field-weighted citation impact, top 37% 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.

NCT01704105 nacompletednot on this map

WASH Benefits Kenya: A Cluster Randomized Controlled Trial of the Benefits of Sanitation, Water Quality, Handwashing, and Nutrition Interventions on Child Health and Development

TypeinterventionalSponsorInnovations for Poverty ActionRan2012 to 2016Enrolled8,246ConditionsMalnutrition, Diarrhea, Child DevelopmentArmsWater Quality, Sanitation, Handwashing, Nutrition
3 · Its place in the literature

Who cites it

9 citing papers in PubMed, 1 synthesis or guideline pooled it, 11 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Association between Malaria Infection and Early Childhood Development Mediated by Anemia in Rural Kenya.International journal of environmental research and public health · 2020
    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

13 authors at 6 institutions in 3 countries.

Kendra A ByrdDepartment of Nutrition, University of California, Davis, Davis, CA.
Thomas N WilliamsImperial College, St. Mary's Hospital, London, United Kingdom.
Audrie LinDivision of Epidemiology and Biostatistics, School of Public Health, University of California, Berkeley, Berkeley, CA.
Amy J PickeringDepartment of Civil and Environmental Engineering, Tufts University, Medford, MA.
Benjamin F ArnoldDivision of Epidemiology and Biostatistics, School of Public Health, University of California, Berkeley, Berkeley, CA.
Charles D ArnoldDepartment of Nutrition, University of California, Davis, Davis, CA.
Marion KiprotichInnovations for Poverty Action, Nairobi, Kenya.
Holly N DentzDepartment of Nutrition, University of California, Davis, Davis, CA.
Sammy M NjengaKEMRI, Nairobi, Kenya.
Gouthami RaoInnovations for Poverty Action, Nairobi, Kenya.
John M ColfordDivision of Epidemiology and Biostatistics, School of Public Health, University of California, Berkeley, Berkeley, CA.
Clair NullMathematica Policy Research, Washington, DC.
Christine P StewartDepartment of Nutrition, University of California, Davis, Davis, CA.
Practical Action · KEUniversity of California, Berkeley · USUniversity of California, Davis · USKenya Medical Research Institute · KEMathematica Policy Research · USTufts University · US

Funding

University of California Launching Future Leaders in Global Health Research Training ProgramD43TW009343 · FIC · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI CRAIG R COHEN, Sung-Jae Lee · 2017 to 2026
$14.7M
University of California Global Health Institute Program for Fellows and ScholarsR25TW009343 · FIC · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI COHEN, CRAIG R, STRATHDEE, STEFFANIE A. · 2012 to 2017
$6.4M
KEMRI-UCSF Sexually Transmitted Infections Training ProgramD43TW007388 · FIC · UNIVERSITY OF CALIFORNIA, SAN FRANCISCO · PI COHEN, CRAIG R · 2005 to 2009
$736k
FIC NIH HHS D43 TW007388FIC NIH HHS D43 TW009343FIC NIH HHS R25 TW009343Wellcome Trust 202800Wellcome Trust 202800/Z/16/Z
6 · The paper itself

Abstract

Background: The relation between subclinical hemoglobinopathies and concentrations of the iron-regulatory hormone hepcidin is not well characterized. Objective: We investigated the relation of hepcidin concentration with hemoglobinopathies among young children in Kenya. Methods: We quantified serum hepcidin and ferritin in 435 Kenyan children aged 14-20 mo in a subsample of the Water, Sanitation, and Handwashing (WASH) Benefits Trial. Blood samples were genotyped for α+-thalassemia and for sickle cell disorder. Hepcidin was compared across sickle cell and α+-thalassemia genotypes separately by using generalized linear models, and children who were normozygous for both conditions were also compared with those who had either of these conditions. In the association between hepcidin and ferritin, we assessed effect modification by genotype. Results: In this population, we found that 16.2% had sickle cell trait and 0.2% had sickle cell disorder, whereas 40.0% were heterozygous for α+-thalassemia and 8.2% were homozygous. Hepcidin concentration did not differ by genotype, but effect modification was found by genotype in the association between hepcidin and ferritin (P < 0.1). Among normozygous sickle cell children (HbAA), there was an association between hepcidin and ferritin (β = 0.92; 95% CI: 0.72, 1.10). However, among those with sickle cell trait (HbAS), the association was no longer significant (β = 0.31; 95% CI: -0.04, 0.66). Similarly, among children who were normozygous (αα/αα) or heterozygous (-α/αα) for α+-thalassemia, hepcidin and ferritin were significantly associated [β = 0.94 (95% CI: 0.68, 1.20) and β = 0.77 (95% CI: 0.51, 1.03), respectively]; however, in children who were homozygous for α+-thalassemia (-α/-α), there was no longer a significant association (β = 0.45; 95% CI: -0.10, 1.00). Conclusion: Hepcidin was not associated with hemoglobin genotype, but there may be a difference in the way hepcidin responds to iron status among those with either sickle cell trait or homozygous α+-thalassemia in young Kenyan children. This trial was registered at clinicaltrials.gov as NCT01704105.

Indexed as

alpha-ThalassemiaAnemia, Sickle CellChild, PreschoolFemaleFerritinsHemoglobin AHepcidinsHumansInfantMaleFerritinsHemoglobin Ahemoglobin AAHepcidins

Identifiers

PMID30517728
PMCPMC6669948
OpenAlexW2902070286

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

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.