Evidence map›Paper›PMID 33705244›Full record

SynthesisInternational journal of stroke : official journal of the International Stroke Society2021

Stroke risk following traumatic brain injury: Systematic review and meta-analysis.

Grace M Turner, Christel McMullan, Olalekan Lee Aiyegbusi, Danai Bem, Tom Marshall, Melanie Calvert, Jonathan Mant, Antonio Belli

Open access · hybridAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in International journal of stroke : official journal of the International Stroke Society, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed, 2 pooled it
3.7field-weighted citation impact, top 5% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

34 citing papers in PubMed, 2 syntheses or guidelines pooled it, 55 citations in OpenAlex.

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  5. Partner-inflicted brain injury may cognitively age survivors by over a decade.medRxiv : the preprint server for health sciences · 2026
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 3 institutions in 1 country.

Grace M TurnerCentre for Patient Reported Outcomes Research, College of Medical and Dental Sciences, 1724University of Birmingham, Birmingham, UK.ORCID 0000-0002-9783-9413
Christel McMullanCentre for Patient Reported Outcomes Research, College of Medical and Dental Sciences, 1724University of Birmingham, Birmingham, UK.
Olalekan Lee AiyegbusiCentre for Patient Reported Outcomes Research, College of Medical and Dental Sciences, 1724University of Birmingham, Birmingham, UK.
Danai BemInstitute of Applied Health Research, 1724University of Birmingham, Birmingham, UK.
Tom MarshallInstitute of Applied Health Research, 1724University of Birmingham, Birmingham, UK.
Melanie CalvertCentre for Patient Reported Outcomes Research, College of Medical and Dental Sciences, 1724University of Birmingham, Birmingham, UK.
Jonathan MantPrimary Care Unit, Department of Public Health and Primary Care, 2152University of Cambridge, Strangeways Research Laboratory, Cambridge, UK.
Antonio BelliNIHR Surgical Reconstruction and Microbiology Research Centre, University Hospitals Birmingham NHS Foundation Trust and 1724University of Birmingham, Birmingham, UK.
University Hospitals Birmingham NHS Foundation Trust · GBUniversity of Birmingham · GBUniversity of Cambridge · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTraumatic brain injury is a global health problem; worldwide, >60 million people experience a traumatic brain injury each year and incidence is rising. Traumatic brain injury has been proposed as an independent risk factor for stroke.

aimsTo investigate the association between traumatic brain injury and stroke risk. SUMMARY OF REVIEW: We undertook a systematic review of MEDLINE, EMBASE, CINAHL, and The Cochrane Library from inception to 4 December 2020. We used random-effects meta-analysis to pool hazard ratios for studies which reported stroke risk post-traumatic brain injury compared to controls. Searches identified 10,501 records; 58 full texts were assessed for eligibility and 18 met the inclusion criteria. The review included a large sample size of 2,606,379 participants from four countries. Six studies included a non-traumatic brain injury control group, all found traumatic brain injury patients had significantly increased risk of stroke compared to controls (pooled hazard ratio 1.86; 95% confidence interval 1.46-2.37). Findings suggest stroke risk may be highest in the first four months post-traumatic brain injury, but remains significant up to five years post-traumatic brain injury. Traumatic brain injury appears to be associated with increased stroke risk regardless of severity or subtype of traumatic brain injury. There was some evidence to suggest an association between reduced stroke risk post-traumatic brain injury and Vitamin K antagonists and statins, but increased stroke risk with certain classes of antidepressants.

conclusionTraumatic brain injury is an independent risk factor for stroke, regardless of traumatic brain injury severity or type. Post-traumatic brain injury review and management of risk factors for stroke may be warranted.

Indexed as

Brain InjuriesBrain Injuries, TraumaticStrokeHumansmeta-analysisriskstrokesystematic reviewtraumatic brain injuryTraumatic brain injury

Identifiers

PMID33705244
PMCPMC8193616
OpenAlexW3134153415

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.