Evidence map›Paper›PMID 23677871›Full record

ArticleClinical infectious diseases : an official publication of the Infectious Diseases Society of America2013

Low serum 25-hydroxyvitamin D level and risk of upper respiratory tract infection in children and adolescents.

Michelle Science, Jonathon L Maguire, Margaret L Russell, Marek Smieja, Stephen D Walter, Mark Loeb

Open access · bronzeAbstract read
In one paragraph

Article in Clinical infectious diseases : an official publication of the Infectious Diseases Society of America, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed, 3 pooled it
7.9field-weighted citation impact, top 2% 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

67 citing papers in PubMed, 3 syntheses or guidelines pooled it, 142 citations in OpenAlex.

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  14. Vitamin D, virus etiology, and atopy in first-time wheezing children in Finland.Pediatric allergy and immunology : official publication of the European Society of Pediatric Allergy and Immunology · 2014
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7 more citing papers are in PubMed but not listed here.

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

6 authors at 3 institutions in 2 countries.

Michelle ScienceDivision of Infectious Diseases, The Hospital for Sick Children, Toronto, Canada.
Jonathon L Maguire
Margaret L Russell
Marek Smieja
Stephen D Walter
Mark Loeb
Hamilton Health Sciences · CASt Michaels Hospital · GBUniversity of Calgary · CA

Funding

A randomized trial of influenza vaccination of Hutterite childrenU01AI076208 · NIAID · MCMASTER UNIVERSITY · PI LOEB, MARK · 2008 to 2010
$1.5M
CIHR MCT-88113NIAID NIH HHS 1 U01 AI 76208-01A1NIAID NIH HHS U01 AI076208
6 · The paper itself

Abstract

backgroundVitamin D may be important for immune function. Studies to date have shown an inconsistent association between vitamin D and infection with respiratory viruses. The purpose of this study was to determine if serum 25-hydroxyvitamin D (25(OH)D) was associated with laboratory-confirmed viral respiratory tract infections (RTIs) in children.

methodsSerum 25(OH)D levels were measured at baseline and children from Canadian Hutterite communities were followed prospectively during the respiratory virus season. Nasopharyngeal specimens were obtained if symptoms developed and infections were confirmed using polymerase chain reaction. The association between serum 25(OH)D and time to laboratory-confirmed viral RTI was evaluated using a Cox proportional hazards model.

resultsSeven hundred forty-three children aged 3-15 years were followed between 22 December 2008 and 23 June 2009. The median serum 25(OH)D level was 62.0 nmol/L (interquartile range, 51.0-74.0). A total of 229 participants (31%) developed at least 1 laboratory-confirmed viral RTI. Younger age and lower serum 25(OH)D levels were associated with increased risk of viral RTI. Serum 25(OH)D levels <75 nmol/L increased the risk of viral RTI by 50% (hazard ratio [HR], 1.51; 95% confidence interval [CI], 1.10-2.07, P = .011) and levels <50 nmol/L increased the risk by 70% (HR, 1.67; 95% CI, 1.16-2.40, P = .006).

conclusionsLower serum 25(OH)D levels were associated with increased risk of laboratory-confirmed viral RTI in children from Canadian Hutterite communities. Interventional studies evaluating the role of vitamin D supplementation to reduce the burden of viral RTIs are warranted.

Indexed as

AdolescentCanadaChildChild, PreschoolCohort StudiesFemaleHumansMalePrevalenceProspective StudiesRespiratory Tract InfectionsRisk AssessmentSerumVirus DiseasesVitamin D25-hydroxyvitamin DVitamin Dcoldserum 25-hydroxyvitamin Dupper respiratory tract infectionvitamin D

Identifiers

PMID23677871
PMCPMC3888147
OpenAlexW2109682901

What OpenQuestion holds

Textmetadata
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.