Trial reportThe Journal of clinical endocrinology and metabolism2015
Effect of Vitamin D3 Supplementation in Black and in White Children: A Randomized, Placebo-Controlled Trial.
Trial report in The Journal of clinical endocrinology and metabolism, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT00732758 (Defining Vitamin D Insufficiency in School Age Children), which is not on this map. Cited by 24 papers, 4 of them syntheses that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Defining Vitamin D Insufficiency in School Age Children: A Randomized Placebo Controlled Trial of Vitamin D3
Who cites it
24 citing papers in PubMed, 4 syntheses or guidelines pooled it, 46 citations in OpenAlex.
- Individual participant data (IPD)-level meta-analysis of randomised controlled trials to estimate the vitamin D dietary requirements in dark-skinned individuals resident at high latitude.European journal of nutrition · 2022Pooled it
- Interventions to improve vitamin D status in at-risk ethnic groups during pregnancy and early childhood: a systematic review.Public health nutrition · 2021Pooled it
- A systematic review and meta-analysis of the response of serum 25-hydroxyvitamin D concentration to vitamin D supplementation from RCTs from around the globe.European journal of clinical nutrition · 2019Pooled it
- Vitamin D supplementation for preventing infections in children under five years of age.The Cochrane database of systematic reviews · 2016Pooled it
- Effect of Vitamin D Supplementation on (25(OH)D) Status in Children 12-30 Months of Age: A Randomized Clinical Trial.Nutrients · 2023Trial
- Daily vitamin DEuropean journal of nutrition · 2021Trial
- Effect of vitamin D3 supplementation on vascular and metabolic health of vitamin D-deficient overweight and obese children: a randomized clinical trial.The American journal of clinical nutrition · 2020Trial
- Vitamin D supplementation to prevent vitamin D deficiency for children with epilepsy: Randomized pragmatic trial protocol.Medicine · 2018Trial
- Impact of Three Doses of Vitamin D3 on Serum 25(OH)D Deficiency and Insufficiency in At-Risk Schoolchildren.The Journal of clinical endocrinology and metabolism · 2017Trial
- Estimations of dietary vitamin D requirements in black and white children.Pediatric research · 2016Trial
- Treatment of Vitamin D Deficiency in Predominantly Hispanic and Black Adolescents: A Randomized Clinical Trial.The Journal of pediatrics · 2016Trial
- Pharmacokinetics Modelling Reveals Inconsistency Between the US and European Vitamin D Safety Guidelines.Biomedicines · 2026Article
- Association of bone turnover C-terminal telopeptide levels, 25-hydroxyvitamin D concentrations and calcium intake in Malaysian adolescents.Frontiers in nutrition · 2025Article
- Scientific opinion on the tolerable upper intake level for vitamin D, including the derivation of a conversion factor for calcidiol monohydrate.EFSA journal. European Food Safety Authority · 2023Article
- Endocrine Health and Health Care Disparities in the Pediatric and Sexual and Gender Minority Populations: An Endocrine Society Scientific Statement.The Journal of clinical endocrinology and metabolism · 2023Article
- Interventions for Prevention and Control of Epidemic of Vitamin D Deficiency.Indian journal of pediatrics · 2019Review
- Bone Health, Body Composition, and Vitamin D Status of Black Preadolescent Children in South Africa.Nutrients · 2019Article
- Racial-ethnic differences in chronic kidney disease-mineral bone disorder in youth on dialysis.Pediatric nephrology (Berlin, Germany) · 2019Article
- Vitamin D3 supplementation in obese, African-American, vitamin D deficient adolescents.Journal of clinical & translational endocrinology · 2018Article
- Vitamin D in pediatric age: consensus of the Italian Pediatric Society and the Italian Society of Preventive and Social Pediatrics, jointly with the Italian Federation of Pediatricians.Italian journal of pediatrics · 2018Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
12 authors at 3 institutions in 1 country.
Funding
Abstract
contextDosages of vitamin D necessary to prevent or treat vitamin D deficiency in children remain to be clarified.
objectiveTo determine the effects of vitamin D3 1000 IU/d on serum 25-hydroxyvitamin D [25(OH)D], PTH, and markers of bone turnover (osteocalcin and collagen type 1 cross-linked C-telopeptide) in black children and white children, and to explore whether there is a threshold level of 25(OH)D associated with maximal suppression of serum PTH concentration.
designHealthy 8- to 14-year-old Pittsburgh-area black (n = 84) and white (n = 73) children not receiving vitamin supplements, enrolled from October through March from 2008 through 2011, were randomized to vitamin D3 1000 IU or placebo daily for 6 months.
resultsThe mean baseline concentration of 25(OH)D was <20 ng/mL in both the vitamin D-supplemented group and the placebo group (19.8 ± 7.6 and 18.8 ± 6.9 ng/mL, respectively). The mean concentration was higher in the supplemented group than in the placebo group at 2 months (26.4 ± 8.1 vs 18.9 ± 8.1 ng/mL; P < .0001) and also at 6 months (26.7 ± 7.6 vs 22.4 ± 7.3; P = .003), after adjusting for baseline 25(OH)D, race, gender, pubertal status, dietary vitamin D intake, body mass index, and sunlight exposure. Increases were only significant in black children, when examined by race. The association between 25(OH)D and PTH concentrations was inverse and linear, without evidence of a plateau. Overall, vitamin D supplementation had no effect on PTH and bone turnover.
conclusionsVitamin D3 supplementation with 1000 IU/d in children with mean baseline 25(OH)D concentration <20 ng/mL effectively raised their mean 25(OH)D concentration to ≥20 ng/mL but failed to reach 30 ng/mL. Vitamin D supplementation had no effect on PTH concentrations.
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What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.