Serum Magnesium and Vitamin D Levels as Indicators of Asthma Severity

Background. Serum magnesium levels affect the concentration of circulating vitamin D in blood and subsequently it affects the immunity; thus it plays significant role in the pathogenesis of asthma. Asthma, in adults, is less studied and hypomagnesemia along with vitamin D deficiency and insufficiency is common in asthmatic individuals, which causes frequent asthma attacks, respiratory infections, severe exacerbations, and poor response to bronchodilators.Objective. To detect the magnitude of vitamin D insufficiency and deficiency and serum magnesium levels among asthmatic patients and to correlate them with the severity of asthma.Materials and Methods. This is a cross-sectional case-control study which includes 60 patients of chronic stable asthma and 60 healthy controls. After taking clinical history and systemic examination, pulmonary function test was done. Serum levels of magnesium, 25-hydroxycholecalciferol [25(OH)D], and calcium were measured in all the subjects.Results. Significant correlation was found between vitamin D deficiency, hypomagnesemia, and asthma severity. Serum calcium levels were unaffected by that.Conclusion. Vitamin D and serum magnesium deficiency are highly prevalent in patients with asthma. Increased asthma severity, frequency of attacks, and exacerbation are associated with lower levels of one or both. Serum 25(OH)D and magnesium levels may serve as important markers of asthma severity.

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Vitamin D deficiency in children with bronchial asthma in southern Jordan: a cross-sectional study

Journal of International Medical Research ◽

10.1177/0300060520974242 ◽

2020 ◽

Vol 48 (12) ◽

pp. 030006052097424

Author(s):

Enas Al-Zayadneh ◽

Nedal Awad Alnawaiseh ◽

Salma Ajarmeh ◽

Areej Hamed Altarawneh ◽

Eman M Albataineh ◽

...

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Bronchial Asthma ◽

Asthma Severity ◽

Cross Sectional Study ◽

Sectional Study ◽

Asthma Control Test ◽

Cross Sectional ◽

Vitamin D Levels ◽

25 Oh Vitamin D

Objectives To assess serum 25-hydroxycholecalciferol (25-OH vitamin D) levels in Jordanian children with bronchial asthma, and to examine correlations between 25-OH vitamin D levels and asthma severity and control. Methods A cross-sectional study was conducted at the Paediatric Chest Clinic, Al-Karak Governmental Hospital, Southern Jordan, between May 2015 and February 2016. Serum 25-hydroxyvitamin D level was determined in children aged 1–14 years diagnosed with bronchial asthma (6–14 years) or recurrent wheezing episodes (<6 years). Asthma severity was determined based on the Global Initiative for Asthma assessment, the Asthma Control Test, and the Childhood Asthma Control Test. Demographic and clinical characteristics were compared between patients with low and normal 25-OH vitamin D levels, and correlations between asthma severity and 25-OH vitamin D level were assessed. Results Out of 98 included children, 25-OH vitamin D levels were deficient and insufficient in 41 (41.8%) and 34 (34.7%) children, respectively. Only 23 (23.5%) had sufficient 25-OH vitamin D levels. A significant correlation was found between severity of asthma symptoms and 25-OH vitamin D deficiency. Conclusion 25-OH vitamin D deficiency is highly prevalent in Jordanian children with bronchial asthma and correlates significantly with asthma severity.

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Vitamin D deficiency in Jordanian children with bronchial asthma : a cross sectional study

10.21203/rs.3.rs-34670/v1 ◽

2020 ◽

Author(s):

Enas Al-Zayadneh ◽

Nedal Awad Alnawaiseh ◽

Salma Ajarmeh ◽

Areej Hamed Altarawneh ◽

Eman M. Albataineh ◽

...

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Bronchial Asthma ◽

Asthma Severity ◽

Cross Sectional Study ◽

Control Test ◽

Sectional Study ◽

Asthma Control Test ◽

Cross Sectional ◽

Vitamin D Levels

Abstract Background : Asthma is the most common chronic diseases that affect children and its prevalence is increasing worldwide posing a great burden on healthcare systems. A growing body of evidence suggests an association between vitamin D deficiency and asthma. The current study aimed to assess serum vitamin D level in Jordanian children with bronchial asthma and to examine the correlation between vitamin D levels and asthma severity and control. Methods: A cross sectional study was conducted in the Pediatric Chest Clinic at AlKarak Governmental Hospital South of Jordan from May 2015 to February 2016. Serum level of 25-hydroxyvitamin-D was determined for 98 Children aged 1 to 14 years and diagnosed with bronchial asthma (6-14years) or recurrent wheezing episodes(<6 years). The severity of asthma was determined based on the Global Initiative for Asthma (GINA) assessment, the Asthma Control test (ACT) and the Childhood Asthma Control Test (C-ACT). The results were considered significant if P ≤.05. Statistical analysis was performed using SPSS 21 (IBM, Armonk, NY, United States of America, 2012). Results : Vitamin D levels were deficient and insufficient in 41(41.8%) and 34(34.7%) of asthmatic children, respectively. Only 23( 23.5%) had sufficient vitamin D levels. A significant correlation was found between the severity of asthma symptoms and vitamin D deficiency (Pearson Chi-squared=.028). Conclusion : Vitamin D deficiency is highly prevalent in children with bronchial asthma in Jordanian population and correlates significantly with asthma severity. Assessment of vitamin D levels in children with bronchial asthma is required in a larger scale studies in Jordan.

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Clinical factors correlated with vitamin D deficiency in patients with obesity scheduled for bariatric surgery: A single center experience

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831/a000662 ◽

2020 ◽

Vol 90 (3-4) ◽

pp. 346-352

Author(s):

Vincenzo Pilone ◽

Salvatore Tramontano ◽

Carmen Cutolo ◽

Federica Marchese ◽

Antonio Maria Pagano ◽

...

Keyword(s):

Bariatric Surgery ◽

Vitamin D ◽

Vitamin D Deficiency ◽

Serum Vitamin ◽

Inverse Correlation ◽

Model Assessment ◽

Cross Sectional ◽

Serum Vitamin D ◽

Female Sex ◽

Vitamin D Levels

Abstract. We aim to assess the prevalence of vitamin D deficiency (VDD) in patients scheduled for bariatric surgery (BS), and to identify factors that might be associated with VDD. We conducted a cross-sectional observational study involving all consecutive patients scheduled for BS from 2017 to 2019. The exclusion criteria were missing data for vitamin D levels, intake of vitamin D supplements in the 3 months prior to serum vitamin D determination, and renal insufficiency. A total of 206 patients (mean age and body mass index [BMI] of 34.9 ± 10.7 years, and 44.3 ± 6.99 kg/m2, respectively) met the inclusion criteria and were enrolled for data analysis. VDD (<19.9 ng/mL), severe VDD (<10 ng/mL), and vitamin D insufficiency (20–29.9 ng/mL) were present in 68.8 %, 12.5 %, and 31.2 % of patients, respectively. A significant inverse correlation was found between vitamin D levels and initial BMI, parathyroid hormone, and homeostatic model assessment of insulin resistance (r = −0.280, p < 0.05; r = −0.407, p = 0.038; r = −0.445, p = 0.005), respectively. VDD was significantly more prevalent in patients with higher BMI [−0.413 ± 0.12, CI95 % (−0.659; −0.167), p = 0.006], whereas no significant association between hypertension [−1.005 ± 1.65, CI95 % (−4.338; 2.326), p = 0.001], and diabetes type 2 (T2D) [−0.44 ± 2.20, CI95 % (−4.876; 3.986), p = 0.841] was found. We observed significant association between female sex and levels of vitamin D [6.69 ± 2.31, CI95 % (2.06; 11.33), p = 0.006]. The present study shows that in patients scheduled for BS, VDD deficiency is common and was associated with higher BMI, and female sex.

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A clinical study to determine the relationship between serum vitamin D levels and severity of asthma

International Journal of Contemporary Pediatrics ◽

10.18203/2349-3291.ijcp20172673 ◽

2017 ◽

Vol 4 (4) ◽

pp. 1397

Author(s):

Pragalatha Kumar ◽

Aruna Gowdra ◽

Arathi Arathi ◽

Ananya Sampath

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Serum Vitamin ◽

Asthma Severity ◽

Severe Form ◽

P Value ◽

Serum Vitamin D ◽

Vitamin D Levels ◽

Children With Asthma ◽

Age And Sex

Background: Vitamin D deficiency has been rediscovered as a public health problem worldwide. Few studies have shown that vitamin D deficiency is associated with asthma severity. The objective of present work was to study the serum vitamin D levels and its relationship with asthma severity in children.Methods: A prospective cohort study of 100 children with asthma between the age group of 5 to 15 years and age and sex matched 40 healthy controls who had come to Indira Gandhi Institute of Child Health, Bengaluru was done. These children’s serum vitamin D levels were estimated and correlated with asthma severity.Results: A total of 100 children with asthma and 40 healthy age and sex matched controls were evaluated. The study group had lower vitamin D (34.95 ng/ml) levels as compared to the control group (57.94 ng/ml) which was statistically significant (p<0.05). 68.4% children had significantly low vitamin D levels and severe form of asthma (p value <0.001). There was also a marked rise in absolute eosinophil count in those who had low vitamin D levels (56.6%) (p-value <0.0001).Conclusions: Vitamin D deficiency is an important risk factor for asthma severity. It modifies the immune system and reduces the inflammation. In the present study, low serum vitamin D levels were significantly correlated with severe form of asthma. There was a significant rise in the absolute eosinophil count in those who exhibited deficiency of vitamin D.

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Vitamin D Status of Epileptic Children in India: A Prospective Cross-Sectional Study from a Tertiary Care Centre

Journal of Child Science ◽

10.1055/s-0040-1715860 ◽

2020 ◽

Vol 10 (01) ◽

pp. e87-e92

Author(s):

Chandrika Azad ◽

Vishal Guglani ◽

Jasbinder Kaur ◽

Roosy Aulakh ◽

Sukhvinder Singh ◽

...

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Tertiary Care ◽

Cross Sectional Study ◽

Vitamin D Status ◽

Sectional Study ◽

Cross Sectional ◽

Vitamin D Levels ◽

Epileptic Children ◽

25 Oh Vitamin D

AbstractVitamin D deficiency is prevalent all over the world, especially in tropical countries. In epileptics, antiepileptic drugs (AED) and associated comorbidities further impact vitamin D status. The aim of this study is to estimate the prevalence of 25(OH) vitamin D deficiency in epileptic children and evaluate probable risk factors. A cross-sectional study of 200 children between 1 and 18 years of age on AED was undertaken in the pediatric neurology clinic of a tertiary care center of Northern India. In all children, serum 25(OH) vitamin D levels, calcium, phosphorus, and alkaline phosphatase were estimated. The deficiency levels of vitamin D were categorized as: deficiency <20 ng/mL, insufficiency 20 to 30 ng/mL, and sufficiency >30 ng/mL. The potential risk factors for hypovitaminosis D, including type of epilepsy, AED regimen (specific medications, polytherapy vs. monotherapy), cerebral palsy, ambulatory status, intellectual disability, body mass index, gender, and vegetarianism were examined. Among the 200 enrolled children (60% boys), 106/200 (53%) were vitamin D deficient. There was no significant relation of vitamin D levels with gender, type of epilepsy, neurological deficit, and type of AED. An inverse relationship of higher phenytoin doses during monotherapy associated with lower vitamin D levels in monotherapy was found, thereby suggesting adverse effect of high doses of phenytoin on vitamin D levels. VDD is common among epileptic children on AED therapy. Vitamin D deficiency is common prevalent among epileptic children on AED therapy, and its detection and treatment correction should be an integral part of epilepsy management.

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VITAMIN D DEFICIENCY;

The Professional Medical Journal ◽

10.29309/tpmj/2012.19.02.2013 ◽

2012 ◽

Vol 19 (02) ◽

pp. 208-213

Author(s):

MUHAMMAD ASLAM ◽

ZAHID MASOOD ◽

Abdul SATTAR ◽

Maria Qudsia

Keyword(s):

Vitamin D ◽

Pregnant Women ◽

Vitamin D Deficiency ◽

Serum Vitamin ◽

Sampling Technique ◽

Reproductive Age ◽

Cross Sectional ◽

Serum Vitamin D ◽

Vitamin D Levels ◽

Vitamin D 3

Objective: To study the Prevalence of Vitamin D deficiency in pregnant women. Study Design: A Cross-sectional analyticalstudy through convenient sampling technique. Setting and duration: At a private Clinic located at East Canal Road Faisalabad, from March2011 to June 2011. Material and method: The study included consecutive 61 pregnant women of reproductive age and non-pregnant womenwere excluded. Blood samples were taken in morning i.e. overnight fasting samples, by venepuncture by disposable syringes sample weretaken and samples were stored at -20 degree centigrade till they were analyzed. Our interest was in age and serum Vitamin D 3 levels. Results:Out of 61 pregnant women results showed that 87.0% pregnant women were having Vitamin D deficiency, 10.0% were having Vitamin Dinsufficiency, 3.0% had Vitamin D sufficiency and none shows Vitamin D intoxication. Vitamin D deficiency was more prevalent in pregnantwomen of younger age group. Furthermore prevalence was higher among the pregnant mothers with high parity. Moreover, 65% women werenot exposed to sunlight properly, 60% women had muscle cramps and bony aches. 90% women never were tested for tested Vitamin D levelsbefore. Conclusions: Prevalence of Vitamin D deficiency is significant in pregnant women. It is also important for its effects on various organsand systems of body as well as on pregnancy and neonate. The different aspects of study led to conclusion to emphasize that Health educationbe imparted to pregnant women and their families in terms of diet, proper sunlight exposure and taking Vitamin D supplements in pregnancy. It isthus recommended to perform Vitamin D levels in every pregnant woman.

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

10.21203/rs.3.rs-15534/v1 ◽

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.

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Does vitamin D deficiency in asthma affect clinical and functional parameters? A Turkish multicenter study

Allergy and Asthma Proceedings ◽

10.2500/aap.2021.42.210056 ◽

2021 ◽

Vol 42 (5) ◽

pp. e152-e158 ◽

Cited By ~ 1

Author(s):

Nurhan Sarıoglu ◽

Arzu Didem Yalcın ◽

Fusun Sahin ◽

Sadan Soyyigit ◽

Fatma Merve Tepetam ◽

...

Keyword(s):

Vitamin D ◽

Vitamin D Deficiency ◽

Asthma Control ◽

Asthma Severity ◽

Control Test ◽

Asthma Control Test ◽

Functional Parameters ◽

Control Subjects ◽

Vitamin D Levels ◽

Target Values

Background: In recent years, interest in the effects of vitamin D on human health and the immune system has increased. Objective: This study aimed to investigate the relationship of vitamin D with asthma severity, attacks, and clinical and functional parameters in adult patients with asthma who were living in different geographic regions in Turkey. Methods: A total of 384 patients with stable asthma and 87 control subjects were included. A physical examination and a pulmonary function test were performed, and routine blood analyses and vitamin D levels were evaluated. Asthma Control Test was applied. The number of exacerbations in the previous year, asthma therapy, and medication adherence were recorded. Results: In our study, vitamin D levels were below the target values in both patients with asthma (median [minimum-maximum] 16.0 ng/mL [3.5‐48 ng/ml]) and control subjects (median [minimum-maximum] 20.0 ng/mL [5.8‐58.79 ng/mL]). However, it was lower in the patients with asthma than in the control subjects (p = 0.001). There was a negative relationship between the levels of vitamin D and the severity of asthma (Kendall τ = −0.146; p < 0.001). Furthermore, the patients with severe asthma were received The Global Initiative for Asthma (GINA) step 5 treatment showed significantly lower vitamin D compared with the patients who received GINA step 4 treatment (p = 0.037). Vitamin D levels correlated with forced vital capacity (FVC), forced expiratory volume in the first second of expiration (FEV1), and peak expiratory flow (r, 0.221‐0.236; p ≤ 0.001). In addition, a positive relationship was found between Asthma Control Test and vitamin D (r = 0.229; p = 0.001). However, body mass index (BMI), asthma exacerbation, and hospitalization were inversely related to vitamin D (r, 0.198‐0.233; p = 0.001). Multivariable regression analysis revealed that FVC (p = 0.002), FEV1 (p = 0.033), and BMI (p = 0.037) were independent determinants associated with vitamin D. Conclusion: This study suggested a high prevalence of vitamin D deficiency in adults with asthma living in different geographic areas in Turkey. Vitamin D deficiency is associated with asthma severity, poor control, and lower lung function.

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Prevalence of Vitamin D and Vitamin B12 Deficiency in Patients reporting to the West Bank governmental hospitals in the period between January 2015 and December 2018

10.47874/2021p2 ◽

2021 ◽

Vol 01 (1) ◽

pp. 16-23

Author(s):

Dina Bitar

Keyword(s):

Vitamin D ◽

Vitamin B12 ◽

Vitamin D Deficiency ◽

Elderly Women ◽

West Bank ◽

Vitamin B12 Deficiency ◽

Risk Groups ◽

The West ◽

Cross Sectional ◽

Vitamin D Levels

Vitamin D and vitamin B12 deficiencies are major public health problems; they may result from inappropriate low exposure to sunlight, autoimmune diseases or diminished intake. These two deficiencies have been extensively studied globally: causes, e"ects, treatment, as well as epidemiology. In Palestine the epidemiology of vitamin D and vitamin B12 deficiencies has not been addressed. This study was undertaken to determine the prevalence of vitamin D and vitamin B12 deficiencies in patients reporting to the West Bank (WB) governmental hospitals in the period between January 2015 and December 2018. It is a retrospective cross-sectional study for the data collected from medical records of patients tested for these deficiencies in 12 WB governmental hospitals for the three years period. Out of 30890 patients tested for vitamin D levels, 88% had insu!cient vitamin D levels (< 30 ng/ml), whereas out of 43532 patients tested for vitamin B12, 19% had insu!cient vitamin B12 levels (< 203 pg/ml). The percentage of patients with insu!cient vitamin D levels is alarming. The percentage of patients with insu!cient vitamin B12 levels falls within ranges reported by other studies in various countries. In conclusion, this study revealed an alarmingly high percentage (88%) of vitamin D deficiency below the reference su!ciency level among patients suspected to have such a deficiency. Around one fifth of the patients tested for vitamin B12 had insu!cient levels. Because testing for vitamin D is costly, we suggest, that medical suspicion of vitamin D deficiency would be adequate to initiate treatment to alleviate the expense, especially in high-risk groups such as elderly women. Future studies have to address major risk factors contributing to these deficiencies that are specific to our community.

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Vitamin D Levels: Associations with Acute Pain Events and Self-Reported Pain in Children with Sickle Cell Disease

Blood ◽

10.1182/blood-2021-145914 ◽

2021 ◽

Vol 138 (Supplement 1) ◽

pp. 3089-3089

Author(s):

Latika Puri ◽

Nicole M Alberts ◽

Guolian Kang ◽

Juan Ding ◽

Jane S Hankins ◽

...

Keyword(s):

Vitamin D ◽

Sickle Cell Disease ◽

Vitamin D Deficiency ◽

Sickle Cell ◽

Care Utilization ◽

Cell Disease ◽

Cross Sectional ◽

Vitamin D Levels ◽

Patient Reported ◽

Deficient Group

Abstract Background/Aims: Individuals with sickle cell disease (SCD) are at high risk for vitamin D deficiency due to dark skin color, limited physical activity, poor nutrition, and renal dysfunction. In smaller retrospective studies, vitamin D deficiency in SCD was associated with increased frequency of acute pain events and higher opioid use, however the impact of vitamin D deficiency on pain related patient reported outcomes has not been described . Supplementation with high dose vitamin D is shown to be associated with fewer pain days per week and higher physical activity scores in patients with chronic pain. Thus, the objective of our study was to evaluate relationship between vitamin D levels, acute health care utilization and self-reported pain among children with SCD. We hypothesized that vitamin D deficiency is associated with increase health care utilization for pain and patient-reported outcomes for pain. Methods: Patients with SCD (1 to 18 years of age), enrolled in Sickle Cell Clinical Research and Intervention Program (SCCRIP), at St. Jude Children's Research Hospital were included in the study (Hankins et.al., Pediatric Blood and Cancer, 2018). Demographic, clinical and laboratory data were extracted from SCCRIP database. Prospective pain event leading to a hospital visit was analyzed. We analyzed pain-related hospitalizations in two ways: the number of pain-related hospitalizations within 2 years prior to and after vitamin D measurement in a cross-sectional design and longitudinally. Generalized linear regression model was used to examine associations between vitamin D and cross-sectional pain events with adjusting for hydroxyurea use. Generalized linear mixed effect model was used to assess the associations between vitamin D and longitudinal pain events, with adjusting for SCD genotype, sex, age, hydroxyurea use and interaction between age and hydroxyurea use. Pediatric Quality of Life Inventory™ Sickle Cell Disease Module (PedsQL™ SCD) was used to measure pain and pain interference using 1) Pain and Hurt and 2) Pain Impact scales. PedsQL™ SCD assessments include a Likert response scale. Items are reverse -scored and transformed to a 0-100 scale where higher scores indicate better health related quality of life in that scale. Two sample t-test or Wilcoxon rank sum test was used to compare mean scores between the two groups. Results: A total of 799 patients (females, n=398; males, n=401) were included in the study. Mean age (Standard Deviation [SD]), range at time of first vitamin D measurement for entire cohort was 8.7 (4.7), (0.8-18 years). Mean (SD) initial vitamin D level for entire cohort was 19.0 (9.4) ng/dl. Mean (SD) number of pain-related hospitalizations within two years of first vitamin D measurement was higher in the vitamin D deficient group as compared to non deficient group [0.81(1.97) vs 0.66 (1.2), (p=0.0034)]. Longitudinal data analyses showed vitamin D deficiency was associated with increased number of pain related hospitalizations (p=0.0091), after adjusting for covariates listed above (Figure 1a). Mean (SD) scores for Pain and Hurt in vitamin D deficient versus non deficient group were [74.5.7(18.2) versus 83.5(15.6), p < 0.001]. Mean (SD) scores for Pain Impact in vitamin D deficient group as compared to non deficient group were [(66.7 (22.7) versus 75.5 (22.3), p <0.001] (Figure 1b) Conclusion: Results indicated that low vitamin D levels predicted higher frequency of painful events leading to a hospital visit and were associated with higher prevalence of self-reported pain and pain interference. Further studies evaluating mechanisms by which vitamin D influences sickle cell pain are warranted and larger controlled trials can help evaluate the therapeutic efficacy of vitamin D for sickle cell pain. Figure 1 Figure 1. Disclosures Hankins: UpToDate: Consultancy; Bluebird Bio: Consultancy; Vindico Medical Education: Consultancy; Global Blood Therapeutics: Consultancy.

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