Vitamin D Deficiency: all 784 studies

Page 6 of 8. Open to participants first (61), then studies with results posted, then the rest; newest registration first within each.

• A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient WomenCompletedNCT02714361Not applicable
• Impact of Maternal Body Weight on Vitamin D Status During PregnancyCompletedNCT02713009Not applicable
• Effects of Supplementation of Vitamin D in Patients With Crohn's DiseaseStatus unknownNCT02704624Phase 4
• Effect of Vitamin D-biofortified Eggs on Wintertime Serum 25-hydroxyvitamin D in Adults: Randomized Controlled TrialCompletedNCT02678364Not applicable
• Vitamin D Levels Following Topical Application of Vitamin D OintmentCompletedNCT02676674Phase 1
• Effects of Vitamin D and Calcium Supplementation on Health and Well-being of Vitamin D Deficient UAE CitizensCompletedNCT02662491Not applicable
• Vitamin D Deficiency and Asthma ExacerbationCompletedNCT02661191Not applicable
• Correction of Vitamin D Deficiency and Its Effect on Ovulation Induction in Women With PCOS (VIDEO): A Feasibility RCTCompletedNCT02656121Phase 2
• Food-based Solutions for Optimal Vitamin D Nutrition and HealthCompletedNCT02631629Not applicable
• Vitamin D Supplementation in Wheelchair Indoor AthletesCompletedNCT02621320Not applicable
• Effects of Cholecalciferol on Osteoprotegerin Levels in Patients on Peritoneal DialysisStatus unknownNCT02598635Phase 4
• Effect of Vitamin D3 Supplementation on Muscle Mass in ICU PatientStatus unknownNCT02594579Phase 3
• Genetic, Dietary and Environmental Influences on Vitamin D MetabolismCompletedNCT02590614Not applicable
• Vitamin D and Microbiota in Cystic FibrosisCompletedNCT02589444Not applicable
• Physiologic Interactions Between the Adrenal- and the Parathyroid GlandsCompletedNCT02572960Phase 4
• Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition?TerminatedNCT02563015Not applicable
• Change in Free 25(OH)D After High Dose in Vitamin D Deficient Postmenopausal WomenCompletedNCT02553044Not applicable
• Vitamin D Supplements on Markers for Cardiovascular Disease and Diabetes: an Individual Participant Data Meta-analysisStatus unknownNCT02551835
• Investigation of Vitamin D3 Enriched, Reduced-fat Yellow Cheese Efficacy to Prevent Vitamin D DeficiencyCompletedNCT02543671Not applicable
• Associations of Vitamin D Deficiency and Vitamin D Receptor Polymorphisms With the Risk of Primary Open-angle GlaucomaCompletedNCT02539745
• Effect of vitaminD3 or 25(OH)D3 Fortified Dairy on Vitmain D Status and CVD Risk MarkersStatus unknownNCT02535910Not applicable
• Analysis of Hypovitaminosis D and Osteopenia/Osteoporosis in Spinal Disease Patients Who Underwent a Spinal Fusion at Illinois Neurological Institute, Peoria, IL., a Retrospective Review From November 1, 2012 to October 31, 2014 and Prospective Pilot From July 1, 2015-June 30, 2016CompletedNCT02534714
• Effect of Consumption of Yogurt Fortified in Calcium and Vit. D on Circulating Levels of 25OHD in Postmenopausal WomenCompletedNCT02534064Not applicable
• Nutritional Requirements for Vitamin D in Pregnant WomenCompletedNCT02506439Not applicable
• Muscle Metabolic Function in Older Adults With Different Vitamin D Status Before and After ExerciseCompletedNCT02485197Not applicable
• Nutritional Deficiencies Preventive Treatment Prior to Laparoscopic Sleeve GastrectomyCompletedNCT02483026Not applicable
• Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery PatientsCompletedNCT02477956Phase 1
• Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin DCompletedNCT02460211Not applicable
• The 'Hidden' Biological Impact of Vitamin D Deficiency: a Biomarker Study; Part 2CompletedNCT02451787Phase 2
• A Prospective, Multi-center Study to Evaluate the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D DeficiencyCompletedNCT02443246Phase 3
• Vitamin D and Mortality: an Individual Participant Data Meta-analysis of Standardized 25-hydroxyvitamin DCompletedNCT02438488
• Efficacy Of Ergocalciferol In Adults According To BMITerminatedNCT02435771Phase 4
• Effect of Vitamin D Replacement on Maternal and Neonatal OutcomesCompletedNCT02434380Phase 3
• Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient IndividualsWithdrawnNCT02422784Phase 1
• Vitamin D Status and Immune FunctionCompletedNCT02416895
• Efficacy of Vitamin D Therapy on Glucose Homeostasis in Obese AdolescentsCompletedNCT02414529Not applicable
• The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory MorbidityCompletedNCT02404623Not applicable
• Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the TropicsStatus unknownNCT02389179Phase 4
• An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This VitaminTerminatedNCT02381600Not applicable
• Drug Metabolizing Enzyme and Transporter Function in Chronic Kidney DiseaseCompletedNCT02360644Not applicable
• Impact of Hypovitaminosis D on Bone Disease in HIV Infected PatientsStatus unknownNCT02351284
• The Effect of Calcifediol (Hy.D 25 SD/S) and Vitamin D3 on Muscle Strength in a Frail Elderly PopulationCompletedNCT02349282Not applicable
• Periodontal and Cardiometabolic Responses to Vitamin D Intervention in African Americans With Periodontal DiseaseStatus unknownNCT02337257Early Phase 1
• Vitamin D, Iodine, and Lead Levels in Haitian Infants and Children.CompletedNCT02301520
• Vitamin D Supplementation During LactationCompletedNCT02297568Not applicable
• Hip Arthroplasty and Vitamin D StatusCompletedNCT02295228
• Impact of Vitamin D on 25-hydroxyvitamin D Levels and Physical FunctionCompletedNCT02293187Not applicable
• The Influence of Vitamin D on Atypical Antipsychotic-induced Weight GainCompletedNCT02281162
• The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During WinterCompletedNCT02275650Not applicable
• Effect of Vitamin D Supplementation on Metabolic Parameters of Patients With PsoriasisCompletedNCT02271971Not applicable
• Isolation of Vitamin D Binding Protein Isoforms From Human VolunteersActive, not recruitingNCT02258035
• Study Vitamin D in Healthy IndividualsCompletedNCT02250625
• Study of the Efficacy and Safety of Cholecalciferol Supplementation on the Activity of Rheumatoid Arthritis in Patients With Vitamin D DeficiencyStatus unknownNCT02243800Phase 3
• Effect of an Inhibitor of Cholesterol Absorption on Vitamin D LevelsCompletedNCT02234544Phase 4
• The Effect of Vitamin D Supplementation on HIV-associated Platelet HyperreactivityCompletedNCT02217553Not applicable
• Cholecalciferol Supplementation for Anemia and Mineral and Bone Disorder in Hemodialysis PatientsCompletedNCT02214563Phase 4
• Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative OutcomesTerminatedNCT02212652Not applicable
• Maternal Vit D Supplements & Infant and Maternal Biomarkers & Outcomes in Southern EthiopiaCompletedNCT02210884Not applicable
• Differences in Ovarian Reserve Markers and Vitamin D Between Infertile Indian, Arabian and Caucasian PopulationWithdrawnNCT02209168
• Efficacy of the Dose Regimen of Oral Vitamin D 50,000 IU in the Treatment of Vitamin D DeficiencyStatus unknownNCT02192229Phase 2
• Vitamin D Deficiency and Placental Calcification in Low-risk Obstetric Population - Are They Related?CompletedNCT02190396
• The Effects of Serum Vitamin D and IVF OutcomeCompletedNCT02187146
• The Role of Vitamin D in Female Reproductive Tract ImmunityCompletedNCT02186535Phase 1
• Dosage Calculation for Vitamin D TreatmentCompletedNCT02186106Phase 4
• Effect of Oral Daily Supplementation With 400 IU Vs 200 IU of Vitamin D in Term Healthy NeonatesCompletedNCT02186028Phase 4
• Evaluation of a Transdermal Vitamin D3 Delivery System, D3forMEWithdrawnNCT02174718Not applicable
• Comparison of Changes in Serum 25(OH)D Concentrations Following Vitamin D Supplementation With Chewable Tablets Versus PillsCompletedNCT02158598Phase 4
• A Single High-dose Oral Supplement of Vitamin D in Young ChineseCompletedNCT02158143Not applicable
• The Effect of Vitamin D Supplements on Vitamin D Status, Cardiometabolic Health and Immune Defense in Danish ChildrenCompletedNCT02145195Not applicable
• Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures.WithdrawnNCT02138591Phase 3
• Styrian Vitamin D Hypertension TrialCompletedNCT02136771Phase 4
• Roles of Vitamin D and HDL in Obese ChildrenCompletedNCT02135913Not applicable
• Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in DiabetesCompletedNCT02132442Phase 3
• Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'.CompletedNCT02118129Not applicable
• Effect of Vitamin D Supplementation on the Metabolic Control and Body Composition of Type 2 Diabetes Subjects in Ajman (UAE)CompletedNCT02101151Not applicable
• Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCICompletedNCT02099955Phase 1/2
• Effects of Vitamin D3 Versus 25OHD3 on Mineral Metabolism and Immune FunctionCompletedNCT02091219Early Phase 1
• Effect of Vitamin D Supplementation in Patients With Heart Failure and Vitamin D DeficiencyStatus unknownNCT02087683Not applicable
• Controlled, Randomized, Four-arm Comparative, Open Label, Multi-centric Clinical Trial to Compare the Efficacy and Safety Parameters of the Once-a-week or Once-a-month Administered 7000 IU, or 30000 IU Vitamin D (Cholecalciferol) to a 1000 IU Dosage Applied Daily in Vitamin D Deficient PatientsCompletedNCT02069990Phase 3
• Vitamin D in Pediatric Asthma: a Randomized Controlled Open-label Pilot TrialStatus unknownNCT02054975Not applicable
• Community Interventional Trial (CITFOMIST)CompletedNCT02035423Not applicable
• The Effect of Maternal and Neonatal Vitamin D Levels on Respiratory Distress Syndrome in Preterm InfantsCompletedNCT02024490
• Effect of Vitamin D Treatment on FatigueCompletedNCT02022475Phase 3
• Comparison of Maternal and Neonatal Vitamin D Levels in Term Neonates With and Without Early Onset SepsisCompletedNCT02019836
• Vitamin D Supplementation in Cirrhotic PatientsCompletedNCT02009748Phase 2
• Vitamin D Status and Supplementation in AthletesCompletedNCT02008201Phase 3
• Optimizing Treatment Programs for Chronic Kidney Disease-mineral and Bone Disorder and MalnutritionStatus unknownNCT02005302Phase 4
• Vitamin D Deficiency and Ovarian Reserve Among Infertile PatientsCompletedNCT01999608
• Vitamin D Intervention Trial in Healthy Chinese, Phase IICompletedNCT01998763Phase 1
• The Role of Vitamin D in the Pathophysiology of Chronic FailureCompletedNCT01993537Phase 4
• Effects of Vitamin D Supplementation on Glucose Metabolism in Women With Former Gestational Diabetes MellitusCompletedNCT01992133Not applicable
• The Effects of Vitamin D Supplementation on Patients With Type 2 Diabetes and Vitamin D DeficiencyCompletedNCT01991054Phase 4
• Inter-relationship Between Vitamin D Requirements and Calcium Intake in Older AdultsCompletedNCT01990872Not applicable
• Vitamin D Deficiency and Pregnancy Rates in Women Undergoing Frozen Embryo TransferCompletedNCT01985672
• Vitamin D Supplementation in Older Adults With Urinary IncontinenceCompletedNCT01971801Not applicable
• Vitamin D Deficiency in Elderly African American Women in Central TexasCompletedNCT01971411
• Vitamin D Serum Concentrations & Supplementation in Children With Cerebral PalsyCompletedNCT01926808
• A Single Wintertime Dose of Vitamin D3 to Prevent Winter Decline in Vitamin D Status in Healthy AdultsCompletedNCT01924910Phase 4
• A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified JuiceCompletedNCT01909063Not applicable
• Supplementation of Vitamin D3 in Patients With Inflammatory Bowel Diseases and Hypovitaminosis DCompletedNCT01877577Not applicable

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