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0 0.5 1 1.5 2+ Mortality 30% Improvement Relative Risk ICU admission 64% Vasheghani et al. Vitamin D for COVID-19 Prophylaxis Is prophylaxis with vitamin D beneficial for COVID-19? Retrospective 508 patients in Iran Lower ICU admission with vitamin D (p=0.009) Vasheghani et al., Scientific Reports, doi:10.1038/s41598-021-97017-9 Favors vitamin D Favors control
The relationship between serum 25-hydroxyvitamin D levels and the severity of COVID-19 disease and its mortality
Vasheghani et al., Scientific Reports, doi:10.1038/s41598-021-97017-9 (date from earlier preprint) (Preprint)
Vasheghani et al., The relationship between serum 25-hydroxyvitamin D levels and the severity of COVID-19 disease and its.., Scientific Reports, doi:10.1038/s41598-021-97017-9 (date from earlier preprint) (Preprint)
Jan 2021   Source   PDF  
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Retrospective 508 hospitalized COVID-19 patients in Iran showing lower mortality with vitamin D supplementation (not reaching statistical significance), and an association between lower vitamin D levels and disease severity, ICU admission, and increased mortality. Details of supplementation are not provided. The multivariate result for vitamin D deficiency is in the preprint, the journal version only contains the multivariate result for serum level.
risk of death, 30.4% lower, RR 0.70, p = 0.45, treatment 7 of 88 (8.0%), control 48 of 420 (11.4%), NNT 29, vitamin D supplementation.
risk of ICU admission, 63.8% lower, RR 0.36, p = 0.009, treatment 13 of 185 (7.0%), control 53 of 323 (16.4%), NNT 11, adjusted per study, inverted to make RR<1 favor treatment, vitamin D levels >30ng/mL.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Vasheghani et al., 18 Jan 2021, retrospective, Iran, preprint, 6 authors, dosage not specified.
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This PaperVitamin DAll
Abstract: OPEN The relationship between serum 25‑hydroxyvitamin D levels and the severity of COVID‑19 disease and its mortality Maryam Vasheghani1, Nasrin Jannati2, Parvaneh Baghaei3, Mitra Rezaei4*, Roqayeh Aliyari1,5 & Majid Marjani6 Supplemental vitamin D can reduce the risk and mortality of viral pneumonia. The relationship between 25 hydroxyvitamin D [25(OH)D] levels and the severity and mortality of Coronavirus disease 2019 (COVID-19) was evaluated. In this cross-sectional study, the admitted patients with COVID-19 were categorized as mild, moderate, severe, and critical based on clinical and radiologic characteristics. Calcium, phosphorus, albumin, creatinine, and serum 25(OH)D were measured and their correlation with the severity of disease and mortality were analyzed. During 2 months, 508 patients (442 patients in general wards and 66 patients in the intensive care unit (ICU)) were included. The participants were 56 ± 17 years old (52% male, 37% with comorbidity). Concerning severity, 13%, 42%, 36%, and 9% had mild, moderate, severe, and critical diseases, respectively. The mortality rate was 10.8%. Admission to ICU, severity of disease and mortality decreased significantly across quartiles of 25(OH)D. According to multivariate logistic regression analysis, disease mortality had a positive correlation with age and had a negative correlation with the serum level of 25(OH)D, calcium, and albumin. In hospitalized patients with COVID-19, low 25(OH)D was associated with severe disease and increased ICU admission and mortality rate. In late 2019, a new coronavirus was identified as a cause of a cluster of pneumonia cases in China which is named COVID-19 d ­ isease1. Currently, COVID-19 is p ­ andemic2. In Iran, 612,772 people as the definitive cases of COVID-19 have been reported by November 10, 2020, and 34,864 people have d ­ ied3. Manifestations of the COVID-19 range from asymptomatic carriers to acute respiratory failure and d ­ eath4. Complications include acute respiratory failure, cytokine release syndrome, increased coagulation factors, and multi-organ damage which are associated with poor ­prognosis5,6. The overall mortality rate until November 18, 2020, is about 2.4% (1,333,742 deaths between 55,326,907 patients)7. Old age, cardiovascular disease, diabetes, high blood pressure, chronic lung disease, cancer, chronic kidney disease, people with defective or suppressed immune systems, obesity, and chronic liver disease have been identified as risk factors for severe disease or ­mortality4,6,8,9. There is currently no specific treatment against COVID-19 d ­ isease10. Currently, the most important way to deal with this disease is prevention and control of the conditions that are considered as a risk factor for the more severe course, and complications. There is evidence from influenza A and severe acute respiratory syndrome (SARS) epidemics suggesting a role for vitamin D in these d ­ iseases11. Previous studies have suggested an association between vitamin D deficiency and an increased chance of developing bacterial and/or viral pneumonia due to viruses such as SARS, MERS, and Influenza A. COVID-19 disease is more prevalent and severe in winter and is more common in people who 1 Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran. 2Internal Medicine Department, School..
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