ArticleAmerican journal of respiratory and critical care medicine2020
Vitamin D Deficiency in Asthma and Chronic Obstructive Pulmonary Disease. A Chicken-or-Egg Story.
Article in American journal of respiratory and critical care medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.
What it found
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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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Efficacy of vitamin D supplementation on COPD and asthma control: A systematic review and meta-analysis.Journal of global health · 2022Pooled it
- Vitamin D in pulmonary disease.Breathe (Sheffield, England) · 2026Review
- 25-Hydroxyvitamin D Deficiency Elevates the Risk of COPD Incidence and Mortality: A Large Population-Based Prospective Cohort Study.Chronic obstructive pulmonary diseases (Miami, Fla.) · 2026Article
- Chronic obstructive pulmonary disease: in-depth analysis of microbiota association and innovative prevention and treatment approaches from the gut-lung axis perspective.Frontiers in immunology · 2025Review
- Genetic information supports a causal relationship between trace elements, inflammatory proteins, and COPD: evidence from a Mendelian randomization analysis.Frontiers in nutrition · 2024Article
- Vitamin D status and chronic obstructive pulmonary disease risk: a prospective UK Biobank study.BMJ open respiratory research · 2023Article
- Calcifediol for Use in Treatment of Respiratory Disease.Nutrients · 2022Review
- Update in Adult Asthma 2020.American journal of respiratory and critical care medicine · 2021Review
- Association of serum vitamin D levels with disease severity, systemic inflammation, prior lung function loss and exacerbations in a cohort of patients with chronic obstructive pulmonary disease (COPD).Journal of thoracic disease · 2021Article
- Serum 25(OH)D Level on Hospital Admission Associated With COVID-19 Stage and Mortality.American journal of clinical pathology · 2021Observational
- Association Between Vitamin D Levels and FEV1, Number of Exacerbations, and CAT Score in Stable COPD Patients in Indonesia.International journal of general medicine · 2021Article
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Authors and funding
2 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
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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.