Evidence map›Paper›PMID 33946851›Full record

ArticleNutrients2021

Prevalence and Correlates of Vitamin D Deficiency among Young South African Infants: A Birth Cohort Study.

Jabulani R Ncayiyana, Leonardo Martinez, Elizabeth Goddard, Landon Myer, Heather J Zar

Open access · goldAbstract read
In one paragraph

Article in Nutrients, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 2 pooled it
2.7field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 2 syntheses or guidelines pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Review
  4. Article
  5. Article
  6. Article
  7. Vitamin D supplementation in a post-pandemic era: A narrative review.South African family practice : official journal of the South African Academy of Family Practice/Primary Care · 2023
    Review
  8. Observational
  9. Vitamin D Concentrations in Infancy and the Risk of Tuberculosis Disease in Childhood: A Prospective Birth Cohort in Cape Town, South Africa.Clinical infectious diseases : an official publication of the Infectious Diseases Society of America · 2022
    Article
  10. Article
  11. 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 2 institutions in 2 countries.

Jabulani R NcayiyanaDivision of Epidemiology & Biostatistics, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.ORCID 0000-0002-2151-1251
Leonardo MartinezDepartment of Epidemiology, School of Public Health, Boston University, Boston, MA 02118, USA.
Elizabeth GoddardDepartment of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town 7700, South Africa.
Landon MyerDivision of Epidemiology & Biostatistics, School of Public Health and Family Medicine, Faculty of Health Sciences, University of Cape Town, Cape Town 7925, South Africa.
Heather J ZarDepartment of Paediatrics and Child Health, Red Cross War Memorial Children's Hospital, and SA-MRC Unit on Child & Adolescent Health, University of Cape Town, Cape Town 7700, South Africa.
University of Cape Town · ZABoston University · US

Funding

South African Medical Research Council SIR
6 · The paper itself

Abstract

Early-life vitamin D deficiency is associated with adverse child health outcomes, but the prevalence of vitamin D deficiency and its correlates in infants remains underexplored, particularly in sub-Saharan Africa. We aimed to investigate the prevalence of vitamin D deficiency and its correlates among young infants in South Africa. This study included 744 infants, aged 6-10 weeks from the Drakenstein Child Health Study, a population-based birth cohort. Infants were categorized into distinct categories based on serum 25(OH)D concentration level including deficient (<50 nmol/L), insufficient (50-74 nmol/L), and sufficient (≥75 nmol/L). Using multivariable Tobit and logistic regression models, we examined the correlates of serum 25(OH)D

Indexed as

AdultCalcifediolCohort StudiesFemaleHumansInfantInfant, NewbornMalePrevalenceRisk FactorsSouth AfricaVitamin D DeficiencyYoung AdultCalcifediolbreastfeedinginfancymaternal HIVSouth Africavitamin D deficiency

Identifiers

PMID33946851
PMCPMC8146842
OpenAlexW3159080979

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.