SynthesisBMJ (Clinical research ed.)2014
Vitamin D and mortality: meta-analysis of individual participant data from a large consortium of cohort studies from Europe and the United States.
Synthesis in BMJ (Clinical research ed.), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 183 papers, 12 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.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
183 citing papers in PubMed, 12 syntheses or guidelines pooled it.
- The predictive value of a body shape index as a novel obesity metric for cancer risk: a systematic review and meta-analysis.Frontiers in nutrition · 2025Pooled it
- Vitamin D-Binding Protein, Bioavailable, and Free 25(OH)D, and Mortality: A Systematic Review and Meta-Analysis.Nutrients · 2022Pooled it
- Pooled it
- Vitamin K status, cardiovascular disease, and all-cause mortality: a participant-level meta-analysis of 3 US cohorts.The American journal of clinical nutrition · 2020Pooled it
- Improving Quality of Patient Data for Treatment of Multidrug- or Rifampin-Resistant Tuberculosis.Emerging infectious diseases · 2020Guideline
- Pooled it
- 25-Hydroxyvitamin D and Total Cancer Incidence and Mortality: A Meta-Analysis of Prospective Cohort Studies.Nutrients · 2019Pooled it
- Vitamin D Status and Mortality: A Systematic Review of Observational Studies.International journal of environmental research and public health · 2019Pooled it
- Nutritional Deficiencies and Clinical Correlates in First-Episode Psychosis: A Systematic Review and Meta-analysis.Schizophrenia bulletin · 2018Pooled it
- Effects of vitamin D supplementation on markers for cardiovascular disease and type 2 diabetes: an individual participant data meta-analysis of randomized controlled trials.The American journal of clinical nutrition · 2018Pooled it
- Pooled it
- Guideline
- Effects of Vitamin D Supplementation on 24-Hour Blood Pressure in Patients with Low 25-Hydroxyvitamin D Levels: A Randomized Controlled Trial.Nutrients · 2022Trial
- Trial
- Trial
- Trial
- Open-label study of treatment with alendronate sodium plus vitamin D in men and women with osteoporosis in Thailand.BMC musculoskeletal disorders · 2018Trial
- Effects of Vitamin D on Blood Pressure, Arterial Stiffness, and Cardiac Function in Older People After 1 Year: BEST-D (Biochemical Efficacy and Safety Trial of Vitamin D).Journal of the American Heart Association · 2017Trial
- Effect of Monthly High-Dose Vitamin D Supplementation on Cardiovascular Disease in the Vitamin D Assessment Study : A Randomized Clinical Trial.JAMA cardiology · 2017Trial
- Trial
123 more citing papers are in PubMed but not listed here.
Corrections and comments
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Authors and funding
28 authors.
Funding
Abstract
objectiveTo investigate the association between serum 25-hydroxyvitamin D concentrations (25(OH)D) and mortality in a large consortium of cohort studies paying particular attention to potential age, sex, season, and country differences.
designMeta-analysis of individual participant data of eight prospective cohort studies from Europe and the US.
settingGeneral population.
participants26,018 men and women aged 50-79 years.
main outcome measuresAll-cause, cardiovascular, and cancer mortality.
results25(OH)D concentrations varied strongly by season (higher in summer), country (higher in US and northern Europe) and sex (higher in men), but no consistent trend with age was observed. During follow-up, 6695 study participants died, among whom 2624 died of cardiovascular diseases and 2227 died of cancer. For each cohort and analysis, 25(OH)D quintiles were defined with cohort and subgroup specific cut-off values. Comparing bottom versus top quintiles resulted in a pooled risk ratio of 1.57 (95% CI 1.36 to 1.81) for all-cause mortality. Risk ratios for cardiovascular mortality were similar in magnitude to that for all-cause mortality in subjects both with and without a history of cardiovascular disease at baseline. With respect to cancer mortality, an association was only observed among subjects with a history of cancer (risk ratio, 1.70 (1.00 to 2.88)). Analyses using all quintiles suggest curvilinear, inverse, dose-response curves for the aforementioned relationships. No strong age, sex, season, or country specific differences were detected. Heterogeneity was low in most meta-analyses.
conclusionsDespite levels of 25(OH)D strongly varying with country, sex, and season, the association between 25(OH)D level and all-cause and cause-specific mortality was remarkably consistent. Results from a long term randomised controlled trial addressing longevity are being awaited before vitamin D supplementation can be recommended in most individuals with low 25(OH)D levels.
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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.