Evidence map›Paper›PMID 28644368›Full record

Observational studyJournal of pediatric gastroenterology and nutrition2017

Vitamin D Deficiency Is Not Associated With Growth or the Incidence of Common Morbidities Among Tanzanian Infants.

Christopher R Sudfeld, Karim P Manji, Emily R Smith, Said Aboud, Rodrick Kisenge, Wafaie W Fawzi, Christopher P Duggan

Open access · hybridAbstract readObservational Study
In one paragraph

Observational study in Journal of pediatric gastroenterology and nutrition, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
2.2field-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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it, 59 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 3 institutions in 2 countries.

Christopher R Sudfeld*Department of Global Health and Population †Department of Nutrition ‡Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA §Department of Paediatrics and Child Health ||Department of Microbiology and Immunology, Muhimbili University of Health and Allied Sciences, Dar es Salaam, Tanzania ¶Department of Division of Gastroenterology, Hepatology and Nutrition, Boston Children's Hospital and Harvard Medical School, Boston, MA.
Karim P Manji
Emily R Smith
Said Aboud
Rodrick Kisenge
Wafaie W Fawzi
Christopher P Duggan
Muhimbili University of Health and Allied Sciences · TZBoston Children's Hospital · USHarvard Global Health Institute · US

Funding

ROLE OF DIETARY CONSTITUENTS ON GENE EXPRESSION IN INTESTINAL EPITHELIUMP30DK040561 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI CHRISTOPHER P DUGGAN · 1994 to 2026
$31.6M
A Trial of Zinc and Micronutrients in Tanzanian ChildrenR01HD048969 · NICHD · HARVARD SCHOOL OF PUBLIC HEALTH · PI DUGGAN, CHRISTOPHER P · 2006 to 2010
$2.0M
Patient-oriented Research in Pediatric Diarrheal DiseasesK24DK104676 · NIDDK · BOSTON CHILDREN'S HOSPITAL · PI DUGGAN, CHRISTOPHER P · 2015 to 2019
$903k
NICHD NIH HHS R01 HD048969NIDDK NIH HHS K24 DK104676NIDDK NIH HHS P30 DK040561
6 · The paper itself

Abstract

objectiveThe objective of this study was to examine risk factors for vitamin D deficiency and determine the association of vitamin D status with child growth and incidence of common morbidities among Tanzanian infants.

methodsA prospective cohort of 581 Tanzanian infants born to human immunodeficiency virus (HIV)-uninfected mothers had serum 25-hydroxyvitamin D assessed at 6 weeks and 6 months of age. Infants were seen at monthly clinic visits for growth monitoring until 18 months of age. Physicians examined infants every 3 months or when an illness was noted to document morbidities.

resultsThe prevalence of vitamin D deficiency (<20 ng/mL) declined from 76.4% at 6 weeks of age to 21.2% at 6 months. Infants who were exclusively breastfed at 6 weeks of age had 2.05 (95% confidence interval 1.11-3.79; P = 0.02) times the risk of vitamin D deficiency as compared formula-fed infants. After multivariate adjustment, there was no association of vitamin D status at 6 weeks or 6 months with the incidence of stunting, wasting, or underweight. There was also no association of low vitamin D with the incidence of diarrhea, upper respiratory infection, acute lower respiratory tract infection, or malaria.

conclusionsVitamin D deficiency is common during early infancy, particularly among exclusively breastfed infants; however, these observational data suggest it may not be an important contributor to morbidity and growth among the general population of Tanzanian infants. Future studies of vitamin D among high-risk infants, including those with low birthweight and exposed to HIV, may be warranted.

Indexed as

Breast FeedingFemaleFollow-Up StudiesGrowth DisordersHumansIncidenceInfantInfectionsMaleMultivariate AnalysisPrevalenceProspective StudiesRisk FactorsTanzaniaThinnessVitamin D Deficiency

Identifiers

PMID28644368
PMCPMC5604126
OpenAlexW2679659917

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.