SynthesisBMJ open2023
Prevalence and risk factors of stroke in high-altitude areas: a systematic review and meta-analysis.
Synthesis in BMJ open, 2023. 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
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
11 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Optimal training strategy for body weight support treadmill training to enhance lower limb motor function and activity of daily living in persons with stroke: a systematic review and meta-analysis of randomized controlled trials.Frontiers in neurology · 2025Pooled it
- Chronic high-altitude exposure and intracerebral hemorrhage: A novel perspective from the vascular-immune-neuronal network.Neuroprotection (Chichester, England) · 2026Review
- Article
- Joint association of triglyceride-glucose (TyG) and atherogenic index of plasma (AIP) with stroke risk: findings from a nationwide prospective cohort.Cardiovascular diabetology · 2026Article
- Olink Proteomics Reveals CCL2 Aggravates Perihematomal Edema After Intracerebral Hemorrhage in High-Altitude Migrants Via CCR2/NF-κB-Mediated Blood-Brain Barrier Disruption.CNS neuroscience & therapeutics · 2026Article
- High-altitude thrombosis: divergent pathophysiological mechanisms and preventive strategies in acutely exposed population and native highlanders.Frontiers in cardiovascular medicine · 2026Review
- High-altitude hypoxic cues and cerebral ischemic tolerance: an evidence-graded translational framework for stroke research.Frontiers in neuroscience · 2026Review
- Stroke in High-Altitude Areas.Brain and behavior · 2025Review
- Efficacy of endovascular treatment for patients with acute large vessel occlusion stroke from the Western Sichuan Plateau and machine learning prediction models: a prospective study protocol.Frontiers in neurology · 2025Article
- Combined effects of insulin resistance and altitude of residence on 10-year risk of atherosclerotic cardiovascular disease.Frontiers in cardiovascular medicine · 2025Article
- High-altitude exposure and ischemic stroke: pathophysiological mechanisms and current perspectives.Frontiers in neurologyReview
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveThe primary objective of this study is to investigate the prevalence and risk factors of stroke in high-altitude areas through a comprehensive systematic review and meta-analysis.
designThis study adopts a systematic review and meta-analysis design. DATA SOURCES: A thorough search was conducted on databases including PubMed, Web of Science, Embase, Cochrane Library, MEDLINE and SCOPUS, covering the period up to June 2023. ELIGIBILITY CRITERIA: Studies reporting the prevalence of stroke in high-altitude areas and exploring related risk factors were included, regardless of whether they involved clinical samples or the general population. Studies with incomplete, outdated or duplicate data were excluded. DATA EXTRACTION AND SYNTHESIS: We performed eligibility screening, data extraction and quality evaluation of the retrieved articles. Meta-analysis was employed to estimate the prevalence and risk factors of stroke in high-altitude areas. The Newcastle-Ottawa Scale was used to assess the risk of bias.
resultsA total of 17 studies encompassing 8 566 042 participants from four continents were included, with altitudes ranging from 1500 m to nearly 5000 m. The pooled prevalence of stroke in high-altitude areas was found to be 0.5% (95% CI 0.3%-7%). Notably, the prevalence was higher in clinical samples (1.2%; 0.4%-2.5%) compared with the general population (0.3%; 95% CI 0.1%-0.6%). When considering geographic regions, the aggregated data indicated that stroke prevalence in the Eurasia plate was 0.3% (0.2%-0.4%), while in the American region, it was 0.8% (0.4%-1.3%). Age (OR, 14.891), gender (OR, 1.289), hypertension (OR, 3.158) and obesity (OR, 1.502) were identified as significant risk factors for stroke in high-altitude areas.
conclusionsThe findings of this study provide insights into the pooled prevalence of stroke in high-altitude areas, highlighting variations based on geographic regions and sampling type. Moreover, age, gender, hypertension and obesity were found to be associated with the occurrence of stroke. PROSPERO REGISTRATION NUMBER: CRD42022381541.
Indexed as
Identifiers
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.