Evidence map›Paper›PMID 38068819›Full record

SynthesisNutrients2023

Biochemical, Nutritional, and Clinical Parameters of Vitamin B12 Deficiency in Infants: A Systematic Review and Analysis of 292 Cases Published between 1962 and 2022.

Miriam Wirthensohn, Susanne Wehrli, Ulf Wike Ljungblad, Martina Huemer

Open access · goldAbstract readSystematic Review
In one paragraph

Synthesis in Nutrients, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed
3.5field-weighted citation impact, top 7% 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, 14 citations in OpenAlex.

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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

4 authors at 3 institutions in 3 countries.

Miriam WirthensohnDepartment of Pediatrics, Landeskrankenhaus Bregenz, 6900 Bregenz, Austria.
Susanne WehrliDepartment of Psychosomatics and Psychiatry, University Children's Hospital, University of Zurich, 8032 Zurich, Switzerland.ORCID 0000-0003-1790-3890
Ulf Wike LjungbladDepartment of Pediatrics, Vestfold Hospital Trust, NO-3168 Tønsberg, Norway.ORCID 0000-0003-2826-9952
Martina HuemerDepartment of Pediatrics, Landeskrankenhaus Bregenz, 6900 Bregenz, Austria.ORCID 0000-0002-0590-678X
University of Zurich · CHLandeskrankenhaus Feldkirch · ATSykehuset i Vestfold · NO

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pooled data from published reports on infants with clinically diagnosed vitamin B12 (B12) deficiency were analyzed with the purpose of describing the presentation, diagnostic approaches, and risk factors for the condition to inform prevention strategies. An electronic (PubMed database) and manual literature search following the PRISMA approach was conducted (preregistration with the Open Science Framework, accessed on 15 February 2023). Data were described and analyzed using correlation analyses, Chi-square tests, ANOVAs, and regression analyses, and 102 publications (292 cases) were analyzed. The mean age at first symptoms (anemia, various neurological symptoms) was four months; the mean time to diagnosis was 2.6 months. Maternal B12 at diagnosis, exclusive breastfeeding, and a maternal diet low in B12 predicted infant B12, methylmalonic acid, and total homocysteine. Infant B12 deficiency is still not easily diagnosed. Methylmalonic acid and total homocysteine are useful diagnostic parameters in addition to B12 levels. Since maternal B12 status predicts infant B12 status, it would probably be advantageous to target women in early pregnancy or even preconceptionally to prevent infant B12 deficiency, rather than to rely on newborn screening that often does not reliably identify high-risk children.

Indexed as

Methylmalonic AcidVitamin B 12 DeficiencyBreast FeedingChildFemaleHomocysteineHumansInfantInfant, NewbornPregnancyVitamin B 12HomocysteineMethylmalonic AcidVitamin B 12breastfeedinghomocysteinemethylmalonic acidnewborn screening

Identifiers

PMID38068819
PMCPMC10708449
OpenAlexW4389131766

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.