ArticleBMJ open2019
Effect of high-dose vitamin D3 on 28-day mortality in adult critically ill patients with severe vitamin D deficiency: a study protocol of a multicentre, placebo-controlled double-blind phase III RCT (the VITDALIZE study).
Article in BMJ open, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03188796 (The VITDALIZE Study), which is not on this map. Cited by 34 papers, 5 of them syntheses that pooled 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.
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.
The VITDALIZE Study: Effect of High-dose Vitamin D3 on 28-day Mortality in Adult Critically Ill Patients With Severe Vitamin D Deficiency: a Multicenter, Placebo-controlled Double-blind Phase III Randomized Controlled Trial (RCT)
Who cites it
34 citing papers in PubMed, 5 syntheses or guidelines pooled it, 120 citations in OpenAlex.
- Vitamin D supplementation and mortality among critically ill adults: a systematic review and meta-analysis.Frontiers in nutrition · 2026Pooled it
- Vitamin D supplementation in critically ill patients: a meta-analysis.Frontiers in nutrition · 2025Pooled it
- Administration of vitamin D and its metabolites in critically ill adult patients: an updated systematic review with meta-analysis of randomized controlled trials.Critical care (London, England) · 2022Pooled it
- High Dose Vitamin D3 Supplementation Is Not Associated With Lower Mortality in Critically Ill Patients: A Meta-Analysis of Randomized Control Trials.Frontiers in nutrition · 2022Pooled it
- Perspective: Vitamin D supplementation prevents rickets and acute respiratory infections when given as daily maintenance but not as intermittent bolus: implications for COVID-19.Clinical medicine (London, England) · 2021Pooled it
- A phase II dose evaluation pilot feasibility randomized controlled trial of cholecalciferol in critically ill children with vitamin D deficiency (VITdAL-PICU study).BMC pediatrics · 2023Trial
- Trial
- Trial
- Association of vitamin D with sepsis incidence and mortality: a large population-based prospective cohort study.Critical care (London, England) · 2026Article
- Vitamin D Deficiency at Hospital Admission With Community-Acquired Pneumonia is Associated With Increased Risk of Mortality: A Prospective Cohort Study.Open forum infectious diseases · 2025Article
- The Role of Vitamin D and Vitamin D Receptor in Sepsis.Current issues in molecular biology · 2025Review
- Article
- Article
- Vitamin D metabolism in critically ill patients with acute kidney injury: a prospective observational study.Critical care (London, England) · 2024Observational
- Should I Supplement Vitamin D in a Patient With Sepsis?Journal of acute medicine · 2024Article
- Update on vitamin D role in severe infections and sepsis.Journal of anesthesia, analgesia and critical care · 2024Review
- Observational
- [Vitamin C and D supplementation in critically ill patients].Medizinische Klinik, Intensivmedizin und Notfallmedizin · 2023Review
- Raised FGF23 Correlates to Increased Mortality in Critical Illness, Independent of Vitamin D.Biology · 2023Article
- Critical illness and bone metabolism: where are we now and what is next?European journal of medical research · 2022Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 5 institutions in 4 countries.
Funding
Abstract
introductionObservational studies have demonstrated an association between vitamin D deficiency and increased risk of morbidity and mortality in critically ill patients. Cohort studies and pilot trials have suggested promising beneficial effects of vitamin D replacement in the critical ill, at least in patients with severe vitamin D deficiency. As vitamin D is a simple, low-cost and safe intervention, it has potential to improve survival in critically ill patients. METHODS AND ANALYSIS: In this randomised, placebo-controlled, double-blind, multicentre, international trial, 2400 adult patients with severe vitamin D deficiency (25-hydroxyvitamin D≤12 ng/mL) will be randomised in a 1:1 ratio by www.randomizer.at to receive a loading dose of 540 000 IU cholecalciferol within 72 hours after intensive care unit (ICU) admission, followed by 4000 IU daily for 90 days or placebo. Hypercalcaemia may occur as a side effect, but is monitored by regular checks of the calcium level. The primary outcome is all-cause mortality at 28 days after randomisation. Secondary outcomes are: ICU, hospital, 90-day and 1-year mortality; hospital and ICU length of stay, change in organ dysfunction on day 5 as measured by Sequential Organ Function Assessment (SOFA) score, number of organ failures; hospital and ICU readmission until day 90; discharge destination, self-reported infections requiring antibiotics until day 90 and health-related quality of life. Recruitment status is ongoing. ETHICS AND DISSEMINATION: National ethical approval was obtained by the Ethics Committee of the University of Graz for Austria, Erasme University Brussels (Belgium) and University Hospital Frankfurt (Germany), and will further be gained according to individual national processes. On completion, results will be published in a peer-reviewed scientific journal. The study findings will be presented at national and international meetings with abstracts online.
trial registrationNCT03188796, EudraCT-No: 2016-002460-13.
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Registered trials
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.