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. 2021 Mar 29:8:660420.
doi: 10.3389/fnut.2021.660420. eCollection 2021.

Low Serum 25-hydroxyvitamin D (Vitamin D) Level Is Associated With Susceptibility to COVID-19, Severity, and Mortality: A Systematic Review and Meta-Analysis

Mohammad Rizki Akbar  1 , Arief Wibowo  1 , Raymond Pranata  1   2 , Budi Setiabudiawan  3
Affiliations

Low Serum 25-hydroxyvitamin D (Vitamin D) Level Is Associated With Susceptibility to COVID-19, Severity, and Mortality: A Systematic Review and Meta-Analysis

Mohammad Rizki Akbar et al. Front Nutr. .

Erratum in

Abstract

Background: This systematic review and meta-analysis aimed to assess whether low serum 25-hydroxyvitamin D (25-OHD) level is associated with susceptibility to COVID-19, severity, and mortality related to COVID-19. Methods: Systematic literature searches of PubMed, Scopus, and Embase database up until 9 December 2020. We include published observational prospective and retrospective studies with information on 25-OHD that reported main/secondary outcome. Low serum 25-OHD refers to participants with serum 25-OHD level below a cut-off point ranging from 20 to 30 ng/mL. Other cut-off values were excluded to reduce heterogeneity. The main outcome was mortality defined as non-survivor/death. The secondary outcome was susceptibility and severe COVID-19. Results: There were 14 studies comprising of 999,179 participants. Low serum 25-OHD was associated with higher rate of COVID-19 infection compared to the control group (OR = 2.71 [1.72, 4.29], p < 0.001; I 2: 92.6%). Higher rate of severe COVID-19 was observed in patients with low serum 25-OHD (OR = 1.90 [1.24, 2.93], p = 0.003; I 2: 55.3%), with a sensitivity of 83%, specificity of 39%, PLR of 1.4, NLR of 0.43, and DOR of 3. Low serum 25-OHD was associated with higher mortality (OR = 3.08 [1.35, 7.00], p = 0.011; I 2: 80.3%), with a sensitivity of 85%, specificity of 35%, PLR of 1.3, NLR of 0.44, and DOR of 3. Meta-regression analysis showed that the association between low serum 25-OHD and mortality was affected by male gender (OR = 1.22 [1.08, 1.39], p = 0.002), diabetes (OR = 0.88 [0.79, 0.98], p = 0.019). Conclusion: Low serum 25-OHD level was associated with COVID-19 infection, severe presentation, and mortality.

Keywords: COVID-19; coronavirus; immunity; infection; mortality; severity; susceptibility; vitamin D.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
PRISMA flowchart.
Figure 2
Figure 2
Low Serum 25-hydroxyvitamin D and COVID-19 infection rate.
Figure 3
Figure 3
Low Serum 25-hydroxyvitamin D and Severe COVID-19. Forest-plot (A), HSROC curve (B), and Fagan's Nomogram (C). HSROC, hierarchical summary receiver operating characteristic.
Figure 4
Figure 4
Low Serum 25-hydroxyvitamin D and Mortality. Forest-plot (A), HSROC curve (B), and Fagan's Nomogram (C). HSROC, hierarchical summary receiver operating characteristic.
Figure 5
Figure 5
Meta-regression Analysis. Male (A) and diabetes (B).
See this image and copyright information in PMC

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