ArticleNutrients2020
Vitamin D Supplementation Associated to Better Survival in Hospitalized Frail Elderly COVID-19 Patients: The GERIA-COVID Quasi-Experimental Study.
Article in Nutrients, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 164 papers, 24 of them syntheses that pooled it.
What it found
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Who cites it
164 citing papers in PubMed, 24 syntheses or guidelines pooled it, 260 citations in OpenAlex.
- Micronutrients, Vitamin D, and Inflammatory Biomarkers in COVID-19: A Systematic Review and Meta-analysis of Causal Inference Studies.Nutrition reviews · 2025Pooled it
- Vitamin D Deficiency Meets Hill's Criteria for Causation in SARS-CoV-2 Susceptibility, Complications, and Mortality: A Systematic Review.Nutrients · 2025Pooled it
- The Effect of Vitamin D Supplementation Post COVID-19 Infection and Related Outcomes: A Systematic Review and Meta-Analysis.Nutrients · 2024Pooled it
- Preventive Vitamin D Supplementation and Risk for COVID-19 Infection: A Systematic Review and Meta-Analysis.Nutrients · 2024Pooled it
- The impact of supplementing vitamin D through different methods on the prognosis of COVID-19 patients: a systematic review and meta-analysis.Frontiers in nutrition · 2024Pooled it
- Pooled it
- Effect of vitamin D supplementation on COVID-19 patients: A systematic review and meta-analysis.Frontiers in nutrition · 2023Pooled it
- Vitamins C and D and COVID-19 Susceptibility, Severity and Progression: An Evidence Based Systematic Review.Medicina (Kaunas, Lithuania) · 2022Pooled it
- Effects of Vitamin D Supplementation on COVID-19 Related Outcomes: A Systematic Review and Meta-Analysis.Nutrients · 2022Pooled it
- The effect of vitamin D supplementation on mortality and intensive care unit admission of COVID-19 patients. A systematic review, meta-analysis and meta-regression.Diabetes/metabolism research and reviews · 2022Pooled it
- Clinical significance of micronutrient supplements in patients with coronavirus disease 2019: A comprehensive systematic review and meta-analysis.Clinical nutrition ESPEN · 2022Pooled it
- Vitamin D and SARS-CoV2 infection, severity and mortality: A systematic review and meta-analysis.PloS one · 2022Pooled 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
- Vitamin D supplementation and clinical outcomes in COVID-19: a systematic review and meta-analysis.Journal of endocrinological investigation · 2022Pooled it
- Vitamin D supplementation to treat SARS-CoV-2 positive patients. Evidence from meta-analysis.Cardiology journal · 2022Pooled it
- Pooled it
- Pooled it
- 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
- A meta-analysis on the risk factors adjusted association between cardiovascular disease and COVID-19 severity.BMC public health · 2021Pooled it
- The link between COVID-19 and VItamin D (VIVID): A systematic review and meta-analysis.Metabolism: clinical and experimental · 2021Pooled it
104 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 5 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe objective of this quasi-experimental study was to determine whether bolus vitamin D supplementation taken either regularly over the preceding year or after the diagnosis of COVID-19 was effective in improving survival among hospitalized frail elderly COVID-19 patients.
methodsSeventy-seven patients consecutively hospitalized for COVID-19 in a geriatric unit were included. Intervention groups were participants regularly supplemented with vitamin D over the preceding year (Group 1), and those supplemented with vitamin D after COVID-19 diagnosis (Group 2). The comparator group involved participants having received no vitamin D supplements (Group 3). Outcomes were 14-day mortality and highest (worst) score on the ordinal scale for clinical improvement (OSCI) measured during COVID-19 acute phase. Potential confounders were age, gender, functional abilities, undernutrition, cancer, hypertension, cardiomyopathy, glycated hemoglobin, number of acute health issues at admission, hospital use of antibiotics, corticosteroids, and pharmacological treatments of respiratory disorders.
resultsThe three groups (
conclusionsRegular bolus vitamin D supplementation was associated with less severe COVID-19 and better survival in frail elderly.
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