Evidence map›Paper›PMID 34930153›Full record

ArticleBMC infectious diseases2021

Association of cerebral venous thrombosis with recent COVID-19 vaccination: case-crossover study using ascertainment through neuroimaging in Scotland.

Paul M McKeigue, Raj Burgul, Jen Bishop, Chris Robertson, Jim McMenamin, Maureen O'Leary, David A McAllister, Helen M Colhoun

Open access · goldAbstract read
In one paragraph

Article in BMC infectious diseases, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.1field-weighted citation impact, top 8% 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

12 citing papers in PubMed, 16 citations in OpenAlex.

  1. Review
  2. Article
  3. Neurovascular Adverse Effects of Sars-Cov-2 Vaccination.Drug design, development and therapy · 2024
    Review
  4. Review
  5. Article
  6. Article
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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 4 institutions in 1 country.

Paul M McKeigueUsher Institute, College of Medicine and Veterinary Medicine, University of Edinburgh, Teviot Place, Edinburgh, EH8 9AG, Scotland, UK.
Raj BurgulForth Valley Royal Hospital, Larbert, FK5 4WR, Scotland, UK.
Jen BishopPublic Health Scotland, Meridian Court, 5 Cadogan Street, Glasgow, G2 6QE, Scotland, UK.
Chris RobertsonPublic Health Scotland, Meridian Court, 5 Cadogan Street, Glasgow, G2 6QE, Scotland, UK.
Jim McMenaminPublic Health Scotland, Meridian Court, 5 Cadogan Street, Glasgow, G2 6QE, Scotland, UK.
Maureen O'LearyPublic Health Scotland, Meridian Court, 5 Cadogan Street, Glasgow, G2 6QE, Scotland, UK.
David A McAllisterPublic Health Scotland, Meridian Court, 5 Cadogan Street, Glasgow, G2 6QE, Scotland, UK.
Helen M ColhounPublic Health Scotland, Meridian Court, 5 Cadogan Street, Glasgow, G2 6QE, Scotland, UK. helen.colhoun@ed.ac.uk.ORCID http://orcid.org/0000-0002-8345-3288
Public Health Scotland · GBForth Valley Royal Hospital · GBUniversity of Strathclyde · GBWestern General Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundTo investigate the association of primary acute cerebral venous thrombosis (CVT) with COVID-19 vaccination through complete ascertainment of all diagnosed CVT in the population of Scotland.

methodsCase-crossover study comparing cases of CVT recently exposed to vaccination (1-14 days after vaccination) with cases less recently exposed. Cases in Scotland from 1 December 2020 were ascertained through neuroimaging studies up to 17 May 2021 and diagnostic coding of hospital discharges up to 28 April 2021, linked to national vaccination records. The main outcome measure was primary acute CVT.

resultsOf 50 primary acute CVT cases, 29 were ascertained only from neuroimaging studies, 2 were ascertained only from hospital discharges, and 19 were ascertained from both sources. Of these 50 cases, 14 had received the Astra-Zeneca ChAdOx1 vaccine and 3 the Pfizer BNT162b2 vaccine. The incidence of CVT per million doses in the first 14 days after vaccination was 2.2 (95% credible interval 0.9 to 4.1) for ChAdOx1 and 1 (95% credible interval 0.1 to 2.9) for BNT162b2. The rate ratio for CVT associated with exposure to ChAdOx1 in the first 14 days compared with exposure 15-84 days after vaccination was 3.2 (95% credible interval 1.1 to 9.5).

conclusionsThese findings support a causal association between CVT and the AstraZeneca vaccine. The absolute risk of post-vaccination CVT in this population-wide study in Scotland was lower than has been reported for populations in Scandinavia and Germany; the explanation for this is not clear.

Indexed as

COVID-19Venous ThrombosisBNT162 VaccineCOVID-19 VaccinesCross-Over StudiesHumansNeuroimagingSARS-CoV-2ScotlandVaccinationBNT162 VaccineCOVID-19 VaccinesCase-crossover studiesCerebral venous thrombosisCOVID-19Vaccination

Identifiers

PMID34930153
PMCPMC8686098
OpenAlexW4226090920

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.