Observational studyJournal of endocrinological investigation2021
Vitamin D deficiency as a predictor of poor prognosis in patients with acute respiratory failure due to COVID-19.
Observational study in Journal of endocrinological investigation, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 173 papers, 16 of them syntheses that pooled it.
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The trial behind it
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Who cites it
173 citing papers in PubMed, 16 syntheses or guidelines pooled it, 308 citations in OpenAlex.
- Vitamin D status in children with mild, moderate, or severe confirmed COVID-19: systematic-review and meta-analysis.Frontiers in pediatrics · 2025Pooled it
- Is the vitamin D status of patients with COVID-19 associated with reduced mortality? A systematic review and meta-analysis.Archives of endocrinology and metabolism · 2023Pooled it
- The Effects of Vitamin D Supplementation in COVID-19 Patients: A Systematic Review.International journal of molecular sciences · 2022Pooled it
- Vitamins C and D and COVID-19 Susceptibility, Severity and Progression: An Evidence Based Systematic Review.Medicina (Kaunas, Lithuania) · 2022Pooled it
- Association of vitamin D deficiency with COVID-19 infection severity: Systematic review and meta-analysis.Clinical endocrinology · 2022Pooled it
- Vitamin D and SARS-CoV2 infection, severity and mortality: A systematic review and meta-analysis.PloS one · 2022Pooled it
- The role of vitamin D in the age of COVID-19: A systematic review and meta-analysis.International journal of clinical practice · 2021Pooled it
- Pooled it
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- Association of Vitamin D Status with SARS-CoV-2 Infection or COVID-19 Severity: A Systematic Review and Meta-analysis.Advances in nutrition (Bethesda, Md.) · 2021Pooled it
- The link between COVID-19 and VItamin D (VIVID): A systematic review and meta-analysis.Metabolism: clinical and experimental · 2021Pooled it
- Micronutrients Deficiency, Supplementation and Novel Coronavirus Infections-A Systematic Review and Meta-Analysis.Nutrients · 2021Pooled it
- Pooled it
- Low vitamin D status is associated with coronavirus disease 2019 outcomes: a systematic review and meta-analysis.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2021Pooled it
- Low Serum 25-hydroxyvitamin D (Vitamin D) Level Is Associated With Susceptibility to COVID-19, Severity, and Mortality: A Systematic Review and Meta-Analysis.Frontiers in nutrition · 2021Pooled it
- Vitamin D Status and SARS-CoV-2 Infection and COVID-19 Clinical Outcomes.Frontiers in public health · 2021Pooled it
- Clinical randomized trial of vitamin D and C supplementation in critically ill patients with respiratory failure.Nutrition journal · 2025Trial
- Trial
- Effect of Oral Vitamin D3 Supplementation in Exclusively Breastfed Newborns: Prospective, Randomized, Double-Blind, Placebo-Controlled Trial.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2022Trial
- Trial
113 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
10 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeHypovitaminosis D is a highly spread condition correlated with increased risk of respiratory tract infections. Nowadays, the world is in the grip of the Coronavirus disease 19 (COVID 19) pandemic. In these patients, cytokine storm is associated with disease severity. In consideration of the role of vitamin D in the immune system, aim of this study was to analyse vitamin D levels in patients with acute respiratory failure due to COVID-19 and to assess any correlations with disease severity and prognosis.
methodsIn this retrospective, observational study, we analysed demographic, clinical and laboratory data of 42 patients with acute respiratory failure due to COVID-19, treated in Respiratory Intermediate Care Unit (RICU) of the Policlinic of Bari from March, 11 to April 30, 2020.
resultsEighty one percent of patients had hypovitaminosis D. Based on vitamin D levels, the population was stratified into four groups: no hypovitaminosis D, insufficiency, moderate deficiency, and severe deficiency. No differences regarding demographic and clinical characteristics were found. A survival analysis highlighted that, after 10 days of hospitalization, severe vitamin D deficiency patients had a 50% mortality probability, while those with vitamin D ≥ 10 ng/mL had a 5% mortality risk (p = 0.019).
conclusionsHigh prevalence of hypovitaminosis D was found in COVID-19 patients with acute respiratory failure, treated in a RICU. Patients with severe vitamin D deficiency had a significantly higher mortality risk. Severe vitamin D deficiency may be a marker of poor prognosis in these patients, suggesting that adjunctive treatment might improve disease outcomes.
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