About: The Role of Vitamin D in The Age of COVID-19: A Systematic Review and Meta-Analysis Along with an Ecological Approach

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type	Academic Article research paper schema:ScholarlyArticle
isDefinedBy	Covid-on-the-Web dataset
title	The Role of Vitamin D in The Age of COVID-19: A Systematic Review and Meta-Analysis Along with an Ecological Approach
Creator	Alizadeh-Navaei, Reza Heydari, Keyvan Shamshirian, Amir Shamshirian, Danial Ghasemian, Roya Hessami, Amirhossein Jafarpour, Hamed Malekan, Mohammad Aalinezhad, Marzieh Asadi, Anahita Azizi, Soheil Behnamfar, Morteza Dadgostar, Ehsan Ebrahimzadeh, Mohammad Khodabandeh, Mehrdad Mohseni, Ali Motamedzadeh, Alireza Naei, Vahid Razzaghi, Nazanin Sedaghat, Meghdad Seyfari, Benyamin Shahmirzadi, Arash Zarandi, Bahman
source	MedRxiv
abstract	Background: Following emerge of a novel coronavirus from Wuhan, China, in December 2019, it has affected the whole world and after months of efforts by the medical communities, there is still no specific approach for prevention and treatment against the Coronavirus Disease 2019 (COVID-19). Evidence recommends that vitamin D might be an important supportive agent for the immune system, mainly in cytokine response regulation against COVID-19. Hence, we carried out a rapid systematic review and meta-analysis along with an ecological investigation in order to maximize the use of everything that exists about the role of vitamin D in the COVID-19. Methods: A systematic search was performed in PubMed, Scopus, Embase, Cochrane Library, Web of Science and Google Scholar (intitle) as well as preprint database of medRxiv, bioRxiv, Research Square, preprints.org, search engine of ScienceDirect and a rapid search through famous journals up to May 26, 2020. Studies focused on the role of vitamin D in confirmed COVID-19 patients were entered into the systematic review. Along with our main aim, to find the second objective: correlation of global vitamin D status and COVID-19 recovery and mortality we carried out a literature search in PubMed database to identify the national or regional studies reported the vitamin D status globally. CMA v. 2.2.064 and SPSS v.16 were used for data analysis. Results: Out of nine studies entered into our systematic review, six studies containing 3,822 participants entered into the meta-analysis. The meta-analysis indicated that 46.5% of COVID-19 patients were suffering from vitamin D deficiency (95% CI, 28.2%-65.8%) and in 43.3% of patients, levels of vitamin D were insufficient (95% CI, 27.4%-60.8%). In regard to our ecological investigation on 51 countries including 408,748 participants, analyses indicated no correlation between vitamin D levels and recovery rate (r= 0.041) as well as mortality rate (r=-0.073) globally. However, given latitude, a small reverse correlation between mortality rate and vitamin D status was observed throughout the globe (r= -0.177). In Asia, a medium direct correlation was observed for recovery rate (r= 0.317) and a significant reveres correlation for mortality rate (r= -0.700) with vitamin D status in such patients. In Europe, there were no correlations for both recovery (r= 0.040) and mortality rate (r= -0.035). In Middle East, the recovery rate (r= 0.267) and mortality rate (r= -0.217) showed a medium correlation. In North and Sought America, surprisingly, both recovery and mortality rate demonstrated a direct correlation respectively (r= 1.000, r=0.500). In Oceania, unexpectedly, recovery (r= -1.000) and mortality (r= -1.000) rates were in considerable reverse correlation with vitamin D levels. Conclusion: In this systematic review and meta-analysis with an ecological approach, we found a high percentage of COVID-19 patients who suffer from vitamin D deficiency or insufficiency. Much more important, our ecological investigation resulted in substantial direct and reverse correlations between recovery and mortality rates of COVID-19 patients with vitamin D status in different countries. Considering latitudes, a small reverse correlation between vitamin D status and mortality rate was found globally. It seems that populations with lower levels of vitamin D might be more susceptible to the novel coronavirus infection. Nevertheless, due to multiple limitations, if this study does not allow to quantify a value of the Vitamin D with full confidence, it allows at least to know what the Vitamin D might be and that it would be prudent to invest in this direction through comprehensive large randomized clinical trials.
has issue date	2020-06-08(xsd:dateTime)
bibo:doi	10.1101/2020.06.05.20123554
has license	medrxiv
sha1sum (hex)	d0d23ebcc6ac28f8e961b49dbd008cfa96bd8579
schema:url	https://doi.org/10.1101/2020.06.05.20123554
resource representing a document's title	The Role of Vitamin D in The Age of COVID-19: A Systematic Review and Meta-Analysis Along with an Ecological Approach
resource representing a document's body	covid:d0d23ebcc6ac28f8e961b49dbd008cfa96bd8579#body_text
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