Trial reportJournal of bone and mineral metabolism2008
The effect of a single dose versus a daily dose of cholecalciferol on the serum 25-hydroxycholecalciferol and parathyroid hormone levels in the elderly with secondary hyperparathyroidism living in a low-income housing unit.
Trial report in Journal of bone and mineral metabolism, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03747523 (Study of the Effect of Ergocalciferol on Plasma and Urinary Mucin-1 Levels in Healthy Individuals and Individuals With Autosomal Dominant Tubulo-Interstitial Kidney Disease Due to MUC1 Mutations), which is not on this map. Cited by 8 papers, 1 of them a synthesis 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.
Study of the Effect of Ergocalciferol on Plasma and Urinary Mucin-1 Levels in Healthy Individuals and Individuals With Autosomal Dominant Tubulo-Interstitial Kidney Disease Due to MUC1 Mutations (ADTKD-MUC1)
Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Large, single-dose, oral vitamin D supplementation in adult populations: a systematic review.Endocrine practice : official journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists · 2014Pooled it
- Effects of High Dose Bolus Cholecalciferol on Free Vitamin D Metabolites, Bone Turnover Markers and Physical Function.Nutrients · 2024Trial
- Vitamin D and immunomodulation in early rheumatoid arthritis: A randomized double-blind placebo-controlled study.PloS one · 2017Trial
- The effect of a single, large bolus of vitamin D in healthy adults over the winter and following year: a randomized, double-blind, placebo-controlled trial.European journal of clinical nutrition · 2015Trial
- Can one or two high doses of oral vitamin D3 correct insufficiency in a non-supplemented rheumatologic population?Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2013Trial
- Effects of vitamin D supplementation on the bone specific biomarkers in HIV infected individuals under treatment with efavirenz.BMC research notes · 2012Trial
- Efficacy of Weekly Split versus Single Doses of Ergocalciferol on Serum 25-Hydroxyvitamin D among Patients on Continuous Ambulatory Peritoneal Dialysis: A Randomized Controlled Trial.International journal of nephrology · 2021Article
- Fixation using alternative implants for the treatment of hip fractures (FAITH-2): design and rationale for a pilot multi-centre 2 × 2 factorial randomized controlled trial in young femoral neck fracture patients.Pilot and feasibility studies · 2019Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We designed a randomized, double-blind, controlled clinical trial to compare the effect of two regimens for administering cholecalciferol on the serum 25-hydroxycholecalciferol [25(OH)D] levels and in the reversion of secondary hyperparathyroidism in the elderly living in a low-income housing unit in the city of Porto Alegre, southern Brazil. We studied 28 individuals ranging in age from 65 to 102 years with serum parathyroid hormone (PTH) levels greater than 48 pg/ml and normal or reduced serum calcium levels. Subjects were randomized to receive oral cholecalciferol, as a single dose of 300 000 IU (group 1) or 800 IU (group 2) daily for 9 months. Both groups received 1250 mg calcium carbonate per day. Serum 25(OH)D and PTH levels were measured at baseline and after 1, 2, 3, 6, and 9 months. Serum 25(OH)D levels in group 1 were significantly higher than in group 2 during the study (P < 0.001). After 1 (P < 0.001) and 2 (P < 0.04) months of treatment, mean serum 25(OH)D levels were higher in group 1. The number of subjects who reached serum 25(OH)D levels >/=20 ng/dl was higher in group 1, after the first (P < 0.001) and third (P = 0.008) months. In the short term, a single 300 000 IU oral dose of vitamin D(3) was more effective than 800 IU per day to increase serum 25(OH)D levels in elderly persons, living in a low-income housing unit, who were taking 500 mg elementary calcium supplement per day.
Indexed as
Identifiers
18979160What 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.