Evidence map›Paper›PMID 36366822›Full record

ArticleNeuroepidemiology2023

Decreased Incidence of Guillain-Barré Syndrome during the COVID-19 Pandemic: A Retrospective Population-Based Study.

Brynhildur Hafsteinsdóttir, Ellen Dalemo, Ólöf Elíasdóttir, Elías Ólafsson, Markus Axelsson

Open access · hybridAbstract read
In one paragraph

Article in Neuroepidemiology, 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.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
2.4field-weighted citation impact, top 10% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 22 citations in OpenAlex.

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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

5 authors at 3 institutions in 2 countries.

Brynhildur HafsteinsdóttirDepartment of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.
Ellen DalemoInstitute of Neuroscience and Clinical Physiology, University of Gothenburg, Gothenburg, Sweden.
Ólöf ElíasdóttirDepartment of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.
Elías ÓlafssonDepartment of Neurology, Landspitali University Hospital, Reykjavík, Iceland.
Markus AxelssonDepartment of Neurology, Sahlgrenska University Hospital, Gothenburg, Sweden.
Sahlgrenska University Hospital · SEReykjavík University · ISUniversity of Gothenburg · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGuillain-Barré syndrome is an immune-mediated acute inflammatory polyneuropathy that is associated with various triggers, including certain infections and vaccines. It has been suggested that both SARS-CoV-2 infection and vaccination may be triggering factors for Guillain-Barré syndrome, but evidence remains equivocal. Here, we conducted a population-based incidence study of Guillain-Barré syndrome spanning the 3 years immediately prior to and the 2 years during the pandemic.

methodsCases were identified by searching a regional diagnostic database for the ICD-10 code for Guillain-Barré syndrome. Individuals who fulfilled the Brighton criteria for Guillain-Barré syndrome were included. Information on clinical presentation, laboratory values, and vaccination status were retrieved from medical records. We calculated the incidence immediately prior to and during the pandemic.

resultsThe Guillain-Barré syndrome incidence rate was 1.35/100,000 person-years for the pre-pandemic period and 0.66/100,000 person-years for the pandemic period (incidence rate ratio: 0.49; p = 0.003). Three cases were temporally associated with SARS-CoV-2 infection and 1 case each to the AstraZeneca and Pfizer-BioNTech COVID-19 vaccines.

conclusionsOur results show that the incidence of Guillain-Barré syndrome decreased during the pandemic. This is most likely due to decreased prevalence of triggering infections due to social restrictions. Our findings do not support a causal relationship between Guillain-Barré syndrome and COVID-19.

Indexed as

COVID-19Guillain-Barre SyndromeInfluenza VaccinesCOVID-19 VaccinesHumansIncidencePandemicsRetrospective StudiesSARS-CoV-2COVID-19 VaccinesInfluenza VaccinesCOVID-19Guillain-Barré syndromeIncidencePopulation-based studiesVaccine

Identifiers

PMID36366822
PMCPMC9892998
OpenAlexW4308771927

What Socratic holds

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LicenceCC BY-NC
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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 Socratic graph.