scholarly journals Vitamin D deficiency is associated with higher hospitalisation risk from COVID-19: a retrospective case-control study

2021 ◽  
Author(s):  
Edward B Jude ◽  
Stephanie F Ling ◽  
Rebecca Allcock ◽  
Beverly X Y Yeap ◽  
Joseph M Pappachan
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Case Control ◽  
Normal Serum ◽  
Retrospective Case ◽  
Median Serum ◽  
Hospitalised Patients ◽  
Vitamin D Levels ◽  
Control Study

Abstract CONTEXT One of the risk factors for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection is postulated to be vitamin D deficiency. To understand better the role of vitamin D deficiency in the disease course of COVID-19, we undertook a retrospective case-control study in the North West of England (NWE). OBJECTIVE To examine whether hospitalisation with COVID-19 is more prevalent in individuals with lower vitamin D levels. METHODS The study included individuals with results of serum 25-hydroxyvitamin D (25[OH]D) between 1 st April 2020 and 29th January 2021. Patients were recruited from two districts in NWE. The last 25(OH)D level in the previous 12 months was categorised as ‘deficient’ if less than 25 nmol/L and ‘insufficient’ if 25-50 nmol/L. RESULTS 80,670 participants were entered into the study. Of these, 1,808 were admitted to hospital with COVID-19, of whom 670 died. In a primary cohort, median serum 25(OH)D in participants who were not hospitalised with COVID-19 was 50.0 [interquartile range, IQR 34.0-66.7] nmol/L versus 35.0 [IQR 21.0-57.0] nmol/L in those admitted with COVID-19 (p <0.005). There were similar findings in a validation cohort (median serum 25(OH)D 47.1 [IQR 31.8-64.7] nmol/L in non-hospitalised versus 33.0 [IQR 19.4-54.1] nmol/L in hospitalised patients). Age-, sex- and seasonal variation-adjusted odds ratios for hospital admission were 2.3-2.4 times higher among participants with serum 25(OH)D <50 nmol/L, compared to those with normal serum 25(OH)D levels, without any excess mortality risk. CONCLUSIONS Vitamin D deficiency is associated with higher risk of COVID-19 hospitalisation. Widespread measurement of serum 25(OH)D and treating any unmasked insufficiency or deficiency through testing may reduce this risk.

scholarly journals Correlation Between 25-hydroxy-Vitamin D and Parkinson's Disease:A Case-Control study

2020 ◽  
Author(s):  
ming xia ◽  
wenjuan Xiu ◽  
Xuliang Wang ◽  
Tingting Wu ◽  
Yingying Zheng ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Vitamin D ◽  
Parkinson's Disease ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Case Control ◽  
Lower Serum ◽  
Vitamin D Levels ◽  
25 Hydroxy Vitamin D ◽  
Control Study

Abstract Background: Previous cross-sectional studies have shown that Parkinson’s disease (PD) patients have lower serum 25- hydroxy vitamin D (25(OH)D) concentrations than controls. whether the research in other regions findings are generalizable to China populations remains untested in other studies. In this case-control study we examined the Correlation between 25-hydroxy-vitamin D and Parkinson's disease.Methods:We establish an association between deficiency of 25-hydroxy-vitamin D and PD in a case-control study of 100 PD patients and 100 control subjects free of neurologic disease in the First Affliated Hospital of Xinjiang Medical University.Results:Total 25-hydroxy-vitamin D levels, were deficient in 21% of patients with PD compared with 4% of controls. In univariate analyses Plasma levels of 25-hydroxy-vitamin D were associated with PD(p<0.001), respectively. In multivariate analyses, Vitamin D deficiency(25(OH)D <20 ng/mL) were significant associated with PD (p=0.008,OR=17.13,95% CI, 2.082-141.075). Individuals with levels in the lowest quartile of 25(OH)D values had the highest prevalence of PD(p =0.026,OR=11.786,95%CI,1.342-103.51)compared with individuals with values in the highest quartile.Conclusions:Our study reveals an association between 25-hydroxy-vitamin D and PD.Patients with incident PD had significantly lower serum 25(OH)D concentrations than age-matched controls, High-risk PD patients with vitamin D deficiency who have not yet developed exercise impairment, these populations should undergo vitamin D measurement and vitamin D treatment as soon as possible.

scholarly journals Vitamin D Deficiency in Non-Autoimmune Hypothyroidism: A case-control study

2020 ◽  
Author(s):  
Salma Ahi ◽  
Mohammad Reza Dehdar ◽  
Naser Hatami
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Inverse Correlation ◽  
Case Control ◽  
Control Group ◽  
Retrospective Case ◽  
Autoimmune Hypothyroidism ◽  
Control Study

Abstract Objectives: Although in many studies, the relationship between autoimmune hypothyroidism (Hashimoto) and Vitamin D deficiency was shown, no research has been performed on the role of vitamin D in non-autoimmune hypothyroidism. Design: This was a Retrospective case–control study in Endocrinology clinic of Jahrom (south of Iran). The patients with Hashimoto (n=633) and non-Hashimoto hypothyroidism (n=305), along with a control group (n=200) were evaluated. 25(OH)D level, T3 and T4 levels were studied and Anti TPO and Anti TG tests were performed. The results of vitamin D level were analyzed and interpreted using SPSS in terms of the cause of hypothyroidism (immune and non-immune). Results: The results of the study showed a significantly lower level of vitamin D in both immune and non-immune Hashimoto’s thyroiditis (HT) in comparison to healthy controls (P<0.05). We observed a significant inverse correlation between the vitamin D and TGAb level (p=0.001, r=-0.261) and a direct correlation of vitamin D with TSH level (p=0.008, r=0.108) in HT patients. Conclusion: Finally, the results indicated that non-autoimmune hypothyroidism, as well as HT, is associated with vitamin D deficiency. The role of vitamin D deficiency in HT was thought to be in the association of higher autoantibody (TGAb) level; while, there should be further studies determining vitamin D deficiency's role in non-immune hypothyroidism.

scholarly journals Association of vitamin D levels with simple febrile seizures in under five children: a case control study

2019 ◽  
Vol 6 (2) ◽  
pp. 365
Author(s):  
Virender Singh ◽  
Preeti Sharma ◽  
Deepika Dewan
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Febrile Seizure ◽  
Case Control Study ◽  
Febrile Seizures ◽  
Case Control ◽  
First Episode ◽  
Age Group ◽  
Vitamin D Levels ◽  
Control Study

Background: There is increasing concern that vitamin D deficiency may play etiological role in Febrile seizures. Few studies have reported vitamin D deficiency in children with recurrent febrile seizures and hypocalcemia seizures.  The objective of this study is to explore vitamin D status in children aged 6 months to 5 years with first episode of febrile seizure and to find the association between vitamin D levels and febrile seizure.Methods: A hospital-based case control study was conducted in sub district hospital, Katra over a period of three years. Cases were children of age group 6 months to 5 years presenting with first episode of simple febrile seizure to the casualty or OPD. For each case, a control was selected with similar age group and same sex who came for short duration fever (<2 days) but without seizures. A 5ml of blood sample for measurement of 25 hydroxy vitamin D was taken from the peripheral vein of each participant by trained laboratory technician. In order to categorise various degrees of vitamin D deficiency, Indian Academy of paediatrics criteria was used. Results were presented in the form of percentages and Odds ratio was calculated as measure of association.Results: A total of 75 cases and 75 controls were included in the study. Cases and controls were comparable as per baseline characteristics. Strong and significant (p<0.01) association of febrile seizures with vit D levels was observed.Conclusions: There was a high prevalence of vitamin D insufficiency among cases of simple febrile seizure.

scholarly journals THE POSSIBLE LINK BETWEEN VITAMIN D LEVELS AND RESTLESS LEG SYNDROME: A HOSPITAL-BASED CASE-CONTROL STUDY FROM KASHMIR, INDIA

2021 ◽  
Vol 9 (5) ◽  
pp. 1362-1367
Author(s):  
Rehana Amin ◽  
◽  
Seema Batool ◽  
Yuman Kawoos ◽  
Masood Maqbool ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Case Control ◽  
Nervous System Development ◽  
Control Group ◽  
P Value ◽  
Restless Leg Syndrome ◽  
Vitamin D Levels ◽  
Control Study

Background & Objectives: Various pathophysiological mechanisms and risk factors have been identified in patients with restless leg syndrome and there exist other factors also that are yet to be identified and are under-researched. Evidence suggests a possible link between Vitamin D deficiency and Restless leg syndrome.The aim was to study the Vitamin D levels in patients diagnosed with RLS and to find a correlation between Vitamin D and RLS. Methods: This was a case-control study carried out in the outpatient department of the Institute of Mental Health and Neurosciences Kashmir.A total of 144 subjects were enrolled in the study. Fifty-one were diagnosed cases of RLS and 93 were healthy controls.The Vitamin D levels were analysed by the chemiluminescent immunoassay method in both cases as well as controls.The descriptive statistics were used for various socio-demographic and clinical variables.The data were analysed by chi-square test, t-test and multivariate logistic regression analysis. Results: The vitamin D levels were significantly low in the RLS group in comparison to the control group. There was a significant correlation between vitamin D levels, vitamin D deficiency and restless leg syndrome (OR= 1.01, p-value 0.005 and OR= 5.40, p-value <0.0001 respectively). Interpretation &conclusions: Vitamin D levels were low in patients with RLS. This signifies vitamin D may have some role in the pathophysiology of RLS.Vitamin D regulates the nervous system development and function therefore, its use can be considered in the management of RLS when other modalities cannot prove as a promising agent.

scholarly journals Vitamin D Deficiency in Non-Autoimmune Hypothyroidism: A case-control study

2019 ◽  
Author(s):  
Salma Ahi ◽  
Mohammad Reza Dehdar ◽  
Naser Hatami
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Inverse Correlation ◽  
Case Control ◽  
Control Group ◽  
Retrospective Case ◽  
Autoimmune Hypothyroidism ◽  
Control Study

Abstract Objectives: Although in many studies, the relationship between autoimmune hypothyroidism (Hashimoto) and Vitamin D deficiency was shown, no research has been performed on the role of vitamin D in non-autoimmune hypothyroidism. Design: This was a Retrospective case–control study in Endocrinology clinic of Jahrom (south of Iran). The patients with Hashimoto (n=633) and non-Hashimoto hypothyroidism (n=305), along with a control group (n=200) were evaluated. 25(OH)D level, T3 and T4 levels were studied and Anti TPO and Anti TG tests were performed. The results of vitamin D level were analyzed and interpreted using SPSS in terms of the cause of hypothyroidism (immune and non-immune). Results: The results of the study showed a significantly lower level of vitamin D in both immune and non-immune Hashimoto’s thyroiditis (HT) in comparison to healthy controls (P<0.05). We observed a significant inverse correlation between the vitamin D and TGAb level (p=0.001, r=-0.261) and a direct correlation of vitamin D with TSH level (p=0.008, r=0.108) in HT patients. Conclusion: Finally, the results indicated that non-autoimmune hypothyroidism, as well as HT, is associated with vitamin D deficiency. The role of vitamin D deficiency in HT was thought to be in the association of higher autoantibody (TGAb) level; while, there should be further studies determining vitamin D deficiency's role in non-immune hypothyroidism.

scholarly journals Comparison Of The 25oh-vitamin D Levels Between Old Patients Hospitalized For Sars-cov-2 Pneumonia And Patients With Other Acute Illnesses: A Retrospective Case-control Study.

2020 ◽  
Author(s):  
Luca Tomisti ◽  
Nicolò Pulizzi ◽  
Pia Clara Pafundi ◽  
Domenico Macaro ◽  
Liliana Villari ◽  
...  
Keyword(s):  
Vitamin D ◽  
Mortality Risk ◽  
Case Control Study ◽  
Case Control ◽  
Retrospective Case ◽  
Old Patients ◽  
Vitamin D Levels ◽  
25 Oh Vitamin D ◽  
Control Study ◽  
Group Serum

Abstract PURPOSE. To assess and compare the serum 25OH-vitamin D levels in three cohorts of patients hospitalized due to acute illness, either related or not to a SARS-COV-2 infection. To investigate, in the patients group with SARS-COV-2 pneumonia, the possible relationship between the serum vit- amin D levels and both disease severity and mortality risk.METHODS. This is a retrospective case-control study. Serum 25OH-vitamin D levels were compared between patients with SARS-COV-2 pneumonia (COVID-19 group, 52 patients), and two control groups, including patients with pneumonia not related to SARS-CoV-2 (NO COVID1 group, 52 patients) and patients with a non-respiratory acute disease (NO COVID2 group, 52 pa- tients).RESULTS. No differences were found in the serum 25 OH-Vitamin D levels among the three groups. In the COVID-19 group, serum 25 OH-Vitamin D levels did not show significant associa- tion with mortality risk (p=0.12), Intensive Care Unit admission risk (p=0.36), inpatients duration (p=0.40) and remission time (p=0.33). Similar results were found for parameters estimating the dis- ease severity, such as basal PO2/FiO2 (p=0.77), worse PO2/FiO2 (p=0.41), basal D-dimer (p=0.46) and basal LDH (p=0.52).CONCLUSIONS. Our data do not show lower 25OH-vitamin D levels in the patients with SARS- COV-2 pneumonia compared to patients hospitalized for other acute illnesses. In the COVID-19 group the 25OH-vitamin D levels did not show significant correlation with a worse outcome.

scholarly journals Vitamin D Deficiency in Non-Autoimmune Hypothyroidism: A case-control study

2020 ◽  
Author(s):  
Salma Ahi ◽  
Mohammad Reza Dehdar ◽  
Naser Hatami
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Case Control Study ◽  
Inverse Correlation ◽  
Case Control ◽  
Control Group ◽  
Retrospective Case ◽  
Autoimmune Hypothyroidism ◽  
Control Study

Abstract Objectives: Although in many studies, the relationship between autoimmune hypothyroidism (Hashimoto) and Vitamin D deficiency was shown, no research has been performed on the role of vitamin D in non-autoimmune hypothyroidism. Design: This was a Retrospective case–control study in Endocrinology clinic of Jahrom (south of Iran). The patients with Hashimoto (n=633) and non-Hashimoto hypothyroidism (n=305), along with a control group (n=200) were evaluated. 25(OH)D level, T3 and T4 levels were studied and Anti TPO and Anti TG tests were performed. The results of vitamin D level were analyzed and interpreted using SPSS in terms of the cause of hypothyroidism (immune and non-immune). Results: The results of the study showed a significantly lower level of vitamin D in both immune and non-immune Hashimoto’s thyroiditis (HT) in comparison to healthy controls (P<0.05). We observed a significant inverse correlation between the vitamin D and TGAb level (p=0.001, r=-0.261) and a direct correlation of vitamin D with TSH level (p=0.008, r=0.108) in HT patients. Conclusion: Finally, the results indicated that non-autoimmune hypothyroidism, as well as HT, is associated with vitamin D deficiency. The role of vitamin D deficiency in HT was thought to be in the association of higher autoantibody (TGAb) level; while, there should be further studies determining vitamin D deficiency's role in non-immune hypothyroidism.

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