ArticleMetabolism: clinical and experimental2021
Letter to the Editor: Vitamin D deficiency in COVID-19: Mixing up cause and consequence.
Article in Metabolism: clinical and experimental, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
67 citing papers in PubMed, 5 syntheses or guidelines pooled it.
- Pooled it
- The effect of vitamin D status on the occurrence of Kawasaki Disease: a meta-analysis.BMC pediatrics · 2024Pooled it
- The effects of vitamin D on all-cause mortality in different diseases: an evidence-map and umbrella review of 116 randomized controlled trials.Frontiers in nutrition · 2023Pooled it
- Vitamin D insufficiency is high in Malaysia: A systematic review and meta-analysis of studies on vitamin D status in Malaysia.Frontiers in nutrition · 2022Pooled it
- The link between COVID-19 and VItamin D (VIVID): A systematic review and meta-analysis.Metabolism: clinical and experimental · 2021Pooled it
- Relation of Serum Copper Status to Survival in COVID-19.Nutrients · 2021Trial
- Trial
- Vitamin D supplementation protects against reductions in plasma 25-hydroxyvitamin D induced by open-heart surgery: Assess-d trial.Physiological reports · 2021Trial
- Vitamin D in Gut and Systemic Immune Tolerance and in Infections' Risk: An International Evidence-Based Consensus Statement.Reviews in endocrine & metabolic disorders · 2026Review
- ALBACOVIDIOL Study: Effect of Calcifediol Treatment on Mortality in Patients Hospitalized for COVID-19: A Retrospective Analysis.Nutrients · 2025Observational
- Vitamin D and COVID-19: Clinical Evidence and Immunological Insights.Life (Basel, Switzerland) · 2025Review
- Vitamin D Status and Incidence of SARS-CoV-2 Reinfections in the Borriana COVID-19 Cohort: A Population-Based Prospective Cohort Study.Tropical medicine and infectious disease · 2025Article
- Efficacy of Oral Supplementation with Cholecalciferol Versus Calcifediol in Patients with Hypovitaminosis D After Stroke.Nutrients · 2025Observational
- Effect of Moderately High-Dose Vitamin D3 Supplementation on Mortality in Patients Hospitalized for COVID-19 Infection.Nutrients · 2025Article
- Vitamin D: Evidence-Based Health Benefits and Recommendations for Population Guidelines.Nutrients · 2025Review
- Article
- A Cross-Sectional Study on Post-COVID-19 Menstrual Abnormalities in Women of Reproductive Age Group at a Tertiary Care Hospital.Obstetrics and gynecology international · 2025Article
- Observational
- Associations between pre-infection serum vitamin D concentrations and Omicron COVID-19 incidence, severity and reoccurrence in elderly individuals.Public health nutrition · 2024Article
- Vitamin D Deficiency after Anterior Cruciate Ligament Reconstruction Associates with Knee Osteoarthritis: A Retrospective Study.Nutrients · 2024Article
7 more citing papers are in PubMed but not listed here.
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Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
PubMed holds no abstract for this paper.
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What OpenQuestion holds
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.