Evidence map›Paper›PMID 29169388›Full record

SynthesisCritical care (London, England)2017

Vitamin D deficiency in critically ill children: a systematic review and meta-analysis.

James Dayre McNally, Nassr Nama, Katie O'Hearn, Margaret Sampson, Karin Amrein, Klevis Iliriani, Lauralyn McIntyre, Dean Fergusson, Kusum Menon

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Critical care (London, England), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed, 2 pooled it
6.1field-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

49 citing papers in PubMed, 2 syntheses or guidelines pooled it, 98 citations in OpenAlex.

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  15. Effect of Single High Dose Vitamin D Administration in Critically Ill Vitamin D-deficient Pediatric Patients: A Randomized Trial.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care 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

9 authors at 5 institutions in 3 countries.

James Dayre McNallyChildren's Hospital of Eastern Ontario, 401 Smyth Road, Ottawa, ON, K1H 8L1, Canada. dmcnally@cheo.on.ca.
Nassr NamaFaculty of Medicine, University of Ottawa, Ottawa, ON, Canada.
Katie O'HearnChildren's Hospital of Eastern Ontario Research Institute, 501 Smyth Road, Ottawa, ON, K1H 8L6, Canada.
Margaret SampsonChildren's Hospital of Eastern Ontario, 401 Smyth Road, Ottawa, ON, K1H 8L1, Canada.
Karin AmreinDivision of Endocrinology and Metabolism, Department of Internal Medicine, Medical University of Graz, Graz, Austria.
Klevis IlirianiSchool of Medicine, Trinity College Dublin, Dublin, Ireland.
Lauralyn McIntyreDivision of Critical Care, Department of Medicine, Ottawa Hospital Research Institute (OHRI), University of Ottawa, Ottawa, ON, Canada.
Dean FergussonDepartment of Epidemiology and Community Medicine, Ottawa Hospital Research Institute (OHRI), University of Ottawa, Ottawa, Ontario, Canada.
Kusum MenonChildren's Hospital of Eastern Ontario, 401 Smyth Road, Ottawa, ON, K1H 8L1, Canada.
Children's Hospital of Eastern Ontario · CAUniversity of Ottawa · CAMedical University of Graz · ATOttawa Hospital · CATrinity College Dublin · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundVitamin D deficiency (VDD) has been hypothesized not only to be common but also to represent a potentially modifiable risk factor for greater illness severity and clinical outcome during critical illness. The objective of this systematic review was to determine the frequency of VDD in pediatric critical illness and its association with clinical outcomes.

methodsMEDLINE, Embase, and CENTRAL were searched through December 12, 2016, with no date or language restrictions. The primary objective was to estimate the prevalence of VDD in the pediatric intensive care unit (PICU) and compare vitamin D status with healthy control populations. Secondary objectives were to evaluate whether VDD is associated with mortality, increased illness severity, PICU interventions, and patient clinical course. Random effects meta-analysis was used to calculate pooled VDD event rate, compare levels with those of control subjects, and evaluate for associations between VDD and clinical outcome.

resultsAmong 2700 citations, 17 studies meeting study eligibility were identified. The studies reported a total of 2783 critically ill children and had a median sample size of 120 (range 12-511). The majority of studies used a 25-hydroxyvitamin D [25(OH)D] level less than 50 nmol/L to define VDD, and the pooled VDD prevalence was 54.8 (95% CI 45.4-63.9). Average 25(OH)D levels were significantly lower in PICU patients than in healthy control subjects (pooled difference -17.3 nmol/L, 95% CI -14.0 to -20.6). In a meta-analysis calculation, we found that VDD was associated with increased mortality (OR 1.62, 95% CI 1.11-2.36), illness severity, and need for PICU interventions.

conclusionsApproximately 50% of critically ill children have VDD at the time of PICU admission, defined as a blood total 25(OH)D concentration under 50 nmol/L. VDD was further determined to be associated with greater illness severity, multiple organ dysfunction, and mortality in the PICU setting. Clinical trials are required to determine if optimization of vitamin D status improves patient outcome.

trial registrationPROSPERO, CRD42016026617 . Registered on 11 January 2016.

Indexed as

Patient Outcome AssessmentAdolescentChildChild, PreschoolCritical IllnessHumansInfantIntensive Care Units, PediatricRisk FactorsSeverity of Illness IndexVitamin D DeficiencyMeta-analysesMortalityNutritionPediatricsSystematic reviewVitamin D

Identifiers

PMID29169388
PMCPMC5701429
OpenAlexW2770760435

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.