Evidence map›Paper›PMID 31640241›Full record

Trial reportNutrients2019

The Effect of Vitamin D Supplementation on its Metabolism and the Vitamin D Metabolite Ratio.

Vito Francic, Stan R Ursem, Niek F Dirks, Martin H Keppel, Verena Theiler-Schwetz, Christian Trummer, Marlene Pandis, Valentin Borzan, Martin R Grübler, Nicolas D Verheyen and 5 more

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Nutrients, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 25 citations in OpenAlex.

  1. Efficacy of Vitamin DNutrients · 2020
    Pooled it
  2. Trial
  3. Trial
  4. Trial
  5. Trial
  6. Article
  7. Vitamin D: marker, measurand & measurement.Endocrine connections · 2023
    Review
  8. Review
  9. Impaired Vitamin D Metabolism in Hospitalized COVID-19 Patients.Pharmaceuticals (Basel, Switzerland) · 2022
    Article
  10. Review
  11. Article
  12. Article
  13. Article
  14. 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

15 authors at 5 institutions in 3 countries.

Vito FrancicDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. vito.francic@medunigraz.at.
Stan R UrsemDepartment of Clinical Chemistry, Endocrine Laboratory, Amsterdam Gastroenterology & Metabolism, Vrije Universiteit Amsterdam and University of Amsterdam, Amsterdam UMC, 1105 Amsterdam, The Netherlands. s.ursem@amsterdamumc.nl.
Niek F DirksDepartment of Clinical Chemistry, Endocrine Laboratory, Amsterdam Gastroenterology & Metabolism, Vrije Universiteit Amsterdam and University of Amsterdam, Amsterdam UMC, 1105 Amsterdam, The Netherlands. n.dirks@amsterdamumc.nl.
Martin H KeppelDepartment of Laboratory Medicine, Paracelsus Medical University Salzburg, 5020 Salzburg, Austria. keppel.martin@gmail.com.
Verena Theiler-SchwetzDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. verena.schwetz@medunigraz.at.
Christian TrummerDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. christian.trummer@medunigraz.at.
Marlene PandisDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. marlene.pandis@medunigraz.at.
Valentin BorzanDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. valentin.borzan@medunigraz.at.
Martin R GrüblerDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. martin.gruebler@gmx.net.
Nicolas D VerheyenDivision of Cardiology, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. nicolas.verheyen@medunigraz.at.
Winfried MärzSynlab Academy, Synlab Holding Germany GmbH, 68163 Mannheim, Germany. Winfried.Maerz@synlab.com.
Andreas TomaschitzHealth Center Trofaiach-Gössgrabenstrasse, 8739 Trofaiach, Austria. andreas.tomaschitz@gmx.at.
Stefan PilzDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. stefan.pilz@chello.at.
Annemieke C HeijboerDepartment of Clinical Chemistry, Endocrine Laboratory, Amsterdam Gastroenterology & Metabolism, Vrije Universiteit Amsterdam and University of Amsterdam, Amsterdam UMC, 1105 Amsterdam, The Netherlands. a.heijboer@amsterdamumc.nl.
Barbara Obermayer-PietschDivision of Endocrinology and Diabetology, Endocrinology Lab Platform, Department of Internal Medicine, Medical University of Graz, 8036 Graz, Austria. barbara.obermayer@medunigraz.at.
Medical University of Graz · ATVrije Universiteit Amsterdam · NLAmsterdam University Medical Centers · NLParacelsus Medical University · ATSynlab (Germany) · DE

Funding

Austrian National Bank 13878Austrian National Bank 13905
6 · The paper itself

Abstract

25-hydroxyvitamin D (25(OH)D) is commonly measured to assess vitamin D status. Other vitamin D metabolites such as 24,25-dihydroxyvitamin D (24,25(OH)

Indexed as

AgedCholecalciferolDietary SupplementsFemaleHumansHypertensionMaleMiddle AgedNutritional StatusPlacebosVitamin D24,25-dihydroxyvitamin D25-hydroxyvitamin DCholecalciferolPlacebosVitamin D24,25-dihydroxy vitamin Drandomized controlled trialvitamin D metabolite ratiovitamin D metabolitesvitamin D supplementation

Identifiers

PMID31640241
PMCPMC6836132
OpenAlexW2980616533

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.