Trial reportRespiratory research2024
High-dose vitamin D
Trial report in Respiratory research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT01304927 (Vitamin D Supplementation and Male Infertility), 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.
Vitamin D Supplementation and Male Infertility: The Copenhagen Bone-Gonadal Study a Double Blinded Randomized Clinical Trial
Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it, 14 citations in OpenAlex.
- The impact of supplementing vitamin D through different methods on the prognosis of COVID-19 patients: a systematic review and meta-analysis.Frontiers in nutrition · 2024Pooled it
- Vitamin D in pulmonary disease.Breathe (Sheffield, England) · 2026Review
- 25-Hydroxyvitamin DCommunications medicine · 2026Article
- Comparative effectiveness of oral nutritional supplements in preventing respiratory tract infections among adults: a systematic review and network meta-analysis.EClinicalMedicine · 2025Article
- Optimizing serum 25(OH)D levels to mitigate the risk of age-related ocular diseases: insights from a large-scale prospective cohort study.Nutrition journal · 2025Article
- Exploring Physical Activity, Sleep, and Nutrition's Role in Fatigue Among Post-COVID-19 Patients.Nutrients · 2024Article
- A study on the effects of vitamin D supplementation on hematological parameters and serum 25-hydroxy vitamin D in healthy dogs.BMC veterinary research · 2024Article
- Calcium, Phosphate, and Vitamin D in Children and Adolescents with Chronic Diseases: A Cross-Sectional Study.Nutrients · 2024Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
7 authors at 3 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundVitamin D has been suggested to influence the immune system, and vitamin D metabolites and the vitamin D receptor (VDR) are generated and expressed in white blood cells (WBC). Moreover, vitamin D status has been associated with incidence and prognosis of some respiratory tract infections (RTI). Therefore, we investigated the effect of vitamin D
methodsA double-blinded, randomized, placebo-controlled clinical trial of 307 infertile men with multiple secondary immunological endpoints. The vitamin D
resultsAt baseline, stratification into clinically relevant groups of vitamin D status (< 25; 25-50; 50-75; >75 nmol/L), showed an inverse association with total leucocyte concentrations (7.0 vs. 6.0 vs. 6.0 vs. 5.5 (10
conclusionsHigh-dose vitamin D
trial registrationNCT01304927 (ClinicalTrials.gov). Registered February 20, 2011.
Indexed as
Identifiers
What Socratic 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 Socratic graph.