scholarly journals The Impact of Vitamin D Level on COVID-19 Infection: Systematic Review and Meta-Analysis

2021 ◽  
Vol 9 ◽  
Author(s):  
Amare Teshome ◽  
Aynishet Adane ◽  
Biruk Girma ◽  
Zeleke A. Mekonnen
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Conclusive Evidence ◽  
Qualitative Synthesis ◽  
Vitamin D Levels ◽  
Coronavirus Infection ◽  
Sufficient Vitamin ◽  
The Impact

Background: Coronavirus disease (COVID-19) is a respiratory and systemic disorder caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) or novel Coronavirus (nCoV). To date, there is no proven curative treatment for this virus; as a result, prevention remains to be the best strategy to combat coronavirus infection (COVID-19). Vitamin D deficiency (VDD) has been proposed to play a role in coronavirus infection (COVID-19). However, there is no conclusive evidence on its impact on COVID-19 infection. Therefore, the present review aimed to summarize the available evidence regarding the association between Vitamin D levels and the risk of COVID-19 infection.Methods: A systematic literature search of databases (PUBMED/MEDLINE, Cochrane/Wiley library, Scopus, and SciELO) were conducted from May 15, 2020, to December 20, 2020. Studies that assessed the effect of vitamin D level on COVID-19/SARS-2 infection were considered for the review. The qualities of the included studies were evaluated using the JBI tools. Meta-analysis with a random-effects model was conducted and odds ratio with their 95%CI were reported. This systematic review and meta-analysis are reported according to the preferred reporting items for systematic review and meta-analysis (PRISMA) guideline.Results: The electronic and supplementary searches for this review yielded 318 records from which, only 14 of them met the inclusion criteria. The qualitative synthesis indicated that vitamin D deficient individuals were at higher risk of COVID-19 infection as compared to vitamin D sufficient patients. The pooled analysis showed that individuals with Vitamin-D deficiency were 80% more likely to acquire COVID-19 infection as compared to those who have sufficient Vitamin D levels (OR = 1.80; 95%CI: 1.72, 1.88). Begg's test also revealed that there was no significant publication bias between the studies (P = 0.764). The subgroup analysis revealed that the risk of acquiring COVID-19 infection was relatively higher in the case-control study design (OR = 1.81).Conclusions: In conclusion, low serum 25 (OH) Vitamin-D level was significantly associated with a higher risk of COVID-19 infection. The limited currently available data suggest that sufficient Vitamin D level in serum is associated with a significantly decreased risk of COVID-19 infection.

scholarly journals Does Vitamin D Deficiency in Different Periods of Gestation Have the Same Effect on Preterm Birth? A Systematic Review and Meta-Analysis

2020 ◽  
Author(s):  
bin Yi ◽  
Rui-han Lian ◽  
Ping-an Qi ◽  
Tao Yuan ◽  
Pei-jing Yan ◽  
...  
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Preterm Birth ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Cochrane Library ◽  
Second Trimester ◽  
Case Control Studies ◽  
Cross Sectional ◽  
Vitamin D Levels

Abstract Background: Current studies suggest that vitamin D deficiency during pregnancy can produce a certain effect for preterm birth, but there is no research showing whether vitamin D deficiency has a consistent effect in different pregnancies; thus, we conducted a systematic review and meta-analysis of 24 observational studies, grouping them according to the gestational age at the time of serum sampling, to investigate whether vitamin D deficiency in different periods of gestation has different effects on preterm birth and to provide an evidence-based basis for pregnant women to measure and supplement vitamin D. Methods: The databases PubMed-Medline, EMBASE, the Cochrane Library, Web of Science, EBSCO, CBM, and CNKI were searched until July 2019. Two researchers independently assessed the eligibility and quality of studies, and STATA 12.0 software was used for meta-analysis. Result: Seven cohort studies, 13 case-control studies, and four cross-sectional studies were included from 2500 articles by inclusion and exclusion criteria. After adjusting for age, race, and other confounding factors, meta-analysis results showed that vitamin D deficiency in the first trimester, the second trimester and the third trimester did not increase the risk of preterm birth (odds ratio (OR) = 1.01, 95% confidence interval (CI) (0.88, 1.16), P = 0.867; OR = 1.12, 95%CI (0.92, 1.37), P = 0.249; OR = 1.05, 95%CI (0.87, 1.27), P = 0.602). However, there was moderate heterogeneity in the study of vitamin D deficiency in the second trimester, and subgroup analysis suggested that vitamin D deficiency in the second trimester may increase the risk of preterm birth (OR = 1.33, 95%CI (1.15, 1.54), P = 0.000). A sensitivity analysis of the second trimester showed that excluding any one study did not significantly change the results. Conclusions: Vitamin D deficiency in early and late pregnancy may not be associated with preterm birth, while vitamin D deficiency in middle pregnancy is likely to have an important effect on preterm birth. Vitamin D levels should be measured in the second trimester of pregnancy, and vitamin D supplements should be provided if necessary.

scholarly journals Correlation of Vitamin D levels with feto-maternal outcome

2017 ◽  
Vol 7 (1) ◽  
pp. 137
Author(s):  
Nidhi Chauhan ◽  
Nikita Pahuja ◽  
Vinita Kalra
Keyword(s):  
Vitamin D ◽  
Birth Weight ◽  
Vitamin D Deficiency ◽  
Hypovitaminosis D ◽  
Vitamin D Status ◽  
Vitamin D Levels ◽  
Increase Risk ◽  
Sufficient Vitamin ◽  
Tract Infections ◽  
The Impact

Background: Vitamin D deficiency in adult females may increase risk of pre-eclampsia, gestational diabetes, bacterial vaginosis. Various malpresentation, cephalo-pelvic disproportion and difficult deliveries increases the risk of caesarean section. It may also increase the risk of fetal hypovitaminosis D, neonatal rickets and tetany, lower respiratory tract infections, low birth weight, the largest cause of infant mortality in India. This study was under taken to study the impact of vitamin D deficiency on feto-maternal outcome.Methods: The study was conducted in the Department of Obstetrics and Gynaecology, Himalayan Institute of Medical Sciences (HIMS), Swami Ram Nagar, Dehradun, over a period of 12 months. Sample size was 100 pregnant females attending antenatal clinic.Results: Out of 100 subjects, pre-eclampsia was seen in 15, among which 5 (23.80%) had deficient, 9 (13.04%) had insufficient and 1 (10%) had sufficient vitamin D levels. Eclampsia was seen in 3 subjects, out of which 1 (4.76%) had deficient, 2 (2.89%) had insufficient vitamin D status. IUGR was seen in 8 subjects, out of which 4 (19.04%) had deficient vitamin D levels, 4 (5.79%) had insufficient vitamin D status. Neither of the two had sufficient vitamin D status. Deficient vitamin D status with birth weight ≤2.5 kg was seen in 9 (42.85%) subjects and 12 (57.14%) subjects with >2.5 kg Insufficient Vitamin D status was seen in 22 (31.88%) subjects with birth weight ≤2.5 kg and 48 (69.56%) with birth weight >2.5 kg.Conclusions: Prevalence of vitamin D deficiency and insufficiency was noted in this region and its association with pre-eclampsia (23.80%, 13.04% and 10% in deficient, insufficient and sufficient group respectively) was seen. Higher incidence of LSCS was also present among the deficient and the insufficient group.

scholarly journals The relationship between preoperative serum vitamin D deficiency and postoperative atrial fibrillation: A systematic review and meta-analysis

2021 ◽  
Vol 13 (2) ◽  
pp. 102-108
Author(s):  
Mehran Rahimi ◽  
Mohammadreza Taban-Sadeghi ◽  
Leila Nikniaz ◽  
Fariba Pashazadeh
Keyword(s):  
Atrial Fibrillation ◽  
Systematic Review ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Serum Vitamin ◽  
Postoperative Atrial Fibrillation ◽  
Serum Vitamin D ◽  
Vitamin D Levels ◽  
The Relationship

Postoperative atrial fibrillation (POAF) is the most common arrhythmia seen in the first days following cardiac surgeries. Recently, there is a growing discussion regarding the link between vitamin D deficiency and POAF development. This systematic review and meta-analysis of the observational studies aimed at evaluating the association between preoperative vitamin D deficiency and Postoperative atrial fibrillation. In this study, using PubMed, Scopus, Google Scholar, EMBASE, Web of Science, and Cochrane Libraries, we searched for records published before July 2020. Two reviewers screened for studies that examined the relationship between preoperative vitamin D levels and the generation of POAF. Data regarding study design, patient characteristics, definition of atrial fibrillation (AF) , type of surgery, vitamin D levels, and measurement methods were extracted. Five studies were included in the meta-analysis. Our primary analysis showed a significant relationship between preoperative levels of vitamin D and POAF development (mean differences (MD) = -2.851, 95% confidence interval (CI) =-5.506 to -0.195; P value 0.035). Our meta-analysis suggested serum vitamin D deficiency is associated with an increased risk of POAF development. Further large scale interventional studies are needed to explore whether vitamin D supplementation will prevent POAF.

scholarly journals Vitamin D Deficiency as a Risk Factor for Schizophrenia: A meta-analysis of Observational Studies

2019 ◽  
Author(s):  
Jia-Lian Zhu ◽  
Wen-Wen Luo ◽  
Xuan Cheng ◽  
Yun Li ◽  
Qi-Zhi Zhang ◽  
...  
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Risk Factor ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Vitamin D Insufficiency ◽  
Cochrane Library ◽  
Vitamin D Levels ◽  
Schizophrenic Patients

Abstract Background: Schizophrenia is a heterogeneous disorder in which there is interaction between genetic and environmental factors. Study have found that vitamin D deficiency is a risk factor for schizophrenia. We conducted a meta-analysis to investigate the relationship between schizophrenia and blood vitamin D level.Methods: A systematic review and meta-analysis have been conducted. All published observational articles have been searched from PubMed, Web of Science, Scopus, Cochrane library and Embase until September 2019. The Newcastle-Ottawa scale was used to examine the quality of the included studies.Results: A total of 38 articles have been included in this study. The lower level of vitamin D was found in people with schizophrenia compared with controls (WMD =-4.50, 95%CI [-6.69, -2.32]). Subgroup analyses based on study design, the patient’s hospitalization status, quality of the study, outcomes, and the country explained part of between-study heterogeneity. No significant differences in publication bias were observed. The overall prevalence of vitamin D deficiency and insufficiency in schizophrenic patients were 66%, 95%CI [57%–76%] and 76%, 95%CI [69%, 83%], respectively. Subjects with schizophrenia were more likely to have vitamin D deficiency or vitamin D insufficiency compared to controls (2.03, 95%CI [1.49, 2.77]; 2.43, 95%CI [1.40, 4.23]).Conclusion: The results of this systematic review show that low vitamin D levels might contribute to the development of schizophrenia. The prevalence of vitamin D deficient or insufficient in schizophrenia was higher than that in healthy controls or another psychotic disease .

The Association Between Vitamin D Deficiency and Recurrent Tonsillitis: A Systematic Review and Meta-analysis

2020 ◽  
Vol 163 (5) ◽  
pp. 883-891
Author(s):  
Ahmad A. Mirza ◽  
Abdulrahman A. Alharbi ◽  
Hani Marzouki ◽  
Talal Al-Khatib ◽  
Faisal Zawawi
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Cochrane Collaboration ◽  
Control Group ◽  
Upper Respiratory Tract ◽  
Recurrent Tonsillitis ◽  
Vitamin D Levels ◽  
Tract Infections

Objectives The role of vitamin D deficiency has been linked with recurrent upper respiratory tract infections, but its impact on the frequency of tonsillitis is not yet fully understood. The objective of this study is to determine the association between vitamin D deficiency and recurrent tonsillitis based on current literature. Data Source A systematic review was performed following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline. Data were collected from online medical databases (PubMed, MEDLINE, EMBASE, and Cochrane Collaboration Registry of Controlled Trials). Review Methods All studies addressing the association of vitamin D deficiency and recurrent tonsillitis prior to March 2019. The data were collected in different phases: screening review using search words and controlled vocabularies followed by detailed review of screened articles based on inclusion and exclusion criteria, then a full review that included screening the references of selected articles. Results Fifty-three studies were potentially eligible; of these, 4 publications met the inclusion criteria and were included in the quantitative synthesis. There was a statistically significant reduction of vitamin D levels in patients with recurrent tonsillitis as compared to healthy controls (mean difference, −10.71; 95% CI, −19.12 to −2.31; P = .01). The odds of vitamin D insufficiency were significantly higher in patients with recurrent tonsillitis as compared to the control group (odds ratio, 4.37; 95% CI, 2.78-6.88; P < .001). Conclusion Vitamin D deficiency was present in patients with recurrent tonsillitis and might be associated with an increase in the risk of recurrent tonsillitis. There is a need to explore these findings via clinical trials based on large populations.

scholarly journals DEFINITION OF VITAMIN D DEFICIENCY IN SCHOOLCHILDREN: SYSTEMATIC REVIEW WITH META-ANALYSIS

2019 ◽  
Vol 56 (4) ◽  
pp. 425-430
Author(s):  
Marcela Almeida LINDEN ◽  
Renata Germano Borges de Oliveira Nascimento FREITAS ◽  
Gabriel HESSEL ◽  
Denise Barbieri MARMO ◽  
Maria Ângela BELLOMO-BRANDÃO
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Mean Value ◽  
Vitamin D Supplementation ◽  
Healthy Children ◽  
Common Definition ◽  
Vitamin D Levels ◽  
Definition Of

ABSTRACT BACKGROUND: Vitamin D deficiency is being recognized as a pandemic due to the volume of people affected by the deficiency and the number of illnesses generated or stimulated by the deficiency. There is a lack of consensus in the literature on what is considered vitamin D deficiency [25(OH)D]. OBJECTIVE: This review brings together the most common levels of 25(OH)D found in healthy schoolchildren and what is considered deficient. METHODS: This systematic review was based on the literature accessed from the electronic databases: MEDLINE, EMBASE, LILACS, SCOPUS and WEB OF SCIENCE. The following descriptors were used in English, Portuguese and Spanish: “Vitamin D”; “Vitamin D deficiency”; “Nutritional Supplements” as well as all their synonyms. The meta-analysis was performed considering the random model. Inclusion criteria: healthy children aged 6 to 12 years, studies that had vitamin D levels, defined vitamin D deficiency. RESULTS: Of the 191 potentially eligible articles, only six articles were included, with 2618 students in total. The mean value of 25(OH)D was estimated at 18.11 ng/mL with 95% confidence interval. Among the articles found, three were considered deficiency levels below 20 ng/mL, one considered below 18 ng/mL, another below 15 ng/mL, and the latter below 11 ng/ mL. The prevalence of vitamin D deficiency among the articles was 48.6%, 7%, 98%, 64.63%, 19.5%, 28.4%, according to each classification used by the same. CONCLUSION: The most common definition in the literature of 25(OH)D deficiency in schoolchildren was at levels below 20 ng/mL. No side effects have been reported in studies that used fortification and/or vitamin D supplementation. Daily supplementation is more effective than seasonal supplementation. However, more studies are needed to define what can be considered as optimal levels of 25(OH)D in children.

scholarly journals Pooled estimate of vitamin D deficiency among pregnant women in India: a systematic review and meta-analysis

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Angeline Jeyakumar ◽  
Vidhya Shinde ◽  
Reshma Ravindran
Keyword(s):  
Systematic Review ◽  
Vitamin D ◽  
Pregnant Women ◽  
Vitamin D Deficiency ◽  
Meta Analysis ◽  
Health Concern ◽  
Study Quality ◽  
Care Services ◽  
Pooled Prevalence ◽  
Women In India

Abstract Background Vitamin D deficiency among pregnant women is a public health concern globally. In India, individual studies report high prevalence. However, lack of national data masks the true burden. This work determined the pooled prevalence of vitamin D deficiency among pregnant women in India through a systematic review of literature and meta-analysis. Methods Three different search engines yielded 15 eligible articles. Study quality was assessed by 10 different criteria and summary of study quality was categorized as per Cochrane standards. Meta-analysis was performed to estimate pooled prevalence of vitamin D deficiency among healthy pregnant women and heterogeneity among selected studies. A sample of n = 4088 was used to study the pooled prevalence among pregnant women. Results The random effects combined estimate was 32.35% (95% CI, (12.58–117.48). High heterogeneity (tau2 = 0.39, I2 = 100%) and high risk of bias was observed among the selected studies. The test for overall effect was observed to be z = 2.54(P = 0.01). Conclusion Pooled estimate > 30% emphasizes the need for screening through antenatal care services and initiate preventive measures to address the deficiency.

scholarly journals Misuse of medication in adult substance misuse services: a systematic review protocol

BMJ Open ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. e047283
Author(s):  
Rosalind Gittins ◽  
Louise Missen ◽  
Ian Maidment
Keyword(s):  
Systematic Review ◽  
Substance Misuse ◽  
Data Extraction ◽  
Meta Analysis ◽  
Grey Literature ◽  
Opioid Analgesics ◽  
Physical And Mental Health ◽  
Qualitative Synthesis ◽  
Treatment Services ◽  
The Impact

IntroductionThere is a growing concern about the misuse of over the counter (OTC) and prescription only medication (POM) because of the impact on physical and mental health, drug interactions, overdoses and drug-related deaths. These medicines include opioid analgesics, anxiolytics such as pregabalin and diazepam and antidepressants. This protocol outlines how a systematic review will be undertaken (during June 2021), which aims to examine the literature on the pattern of OTC and POM misuse among adults who are accessing substance misuse treatment services. It will include the types of medication being taken, prevalence and demographic characteristics of people who access treatment services.Methods and analysisAn electronic search will be conducted on the Cochrane, OVID Medline, Pubmed, Scopus and Web of Science databases as well as grey literature. Two independent reviewers will conduct the initial title and abstract screenings, using predetermined criteria for inclusion and exclusion. If selected for inclusion, full-text data extraction will be conducted using a pilot-tested data extraction form. A third reviewer will resolve disagreements if consensus cannot be reached. Quality and risk of bias assessment will be conducted for all included studies. A qualitative synthesis and summary of the data will be provided. If possible, a meta-analysis with heterogeneity calculation will be conducted; otherwise, Synthesis Without Meta-analysis will be undertaken for quantitative data. The reporting of this protocol follows the Preferred Reporting Items for Systematic Reviews and Meta-Analyses.Ethics and disseminationEthical approval is not required. Findings will be peer reviewed, published and shared verbally, electronically and in print, with interested clinicians and policymakers.PROSPERO registration numberCRD42020135216.

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