Evidence map›Paper›PMID 33421351›Full record

SynthesisBrain and behavior2021

Central nervous system manifestations in COVID-19 patients: A systematic review and meta-analysis.

Shahrzad Nazari, Amirhossein Azari Jafari, Seyyedmohammadsadeq Mirmoeeni, Saeid Sadeghian, Mohammad Eghbal Heidari, Siavash Sadeghian, Farhad Assarzadegan, Seyed Mahmoud Puormand, Hamid Ebadi, Davood Fathi and 1 more

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Brain and behavior, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed, 4 pooled it
–field-weighted citation impact
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

24 citing papers in PubMed, 4 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. Trial
  6. Neurological, psychological, psychosocial complications of long-COVID and their management.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Review
  7. Article
  8. Article
  9. Article
  10. Review
  11. Article
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  13. Article
  14. [Neuropathic pain and COVID-19: A silent relationship].Revista espanola de anestesiologia y reanimacion · 2022
    Article
  15. Neuropathic pain and COVID-19: A silent relationship.Revista espanola de anestesiologia y reanimacion · 2022
    Article
  16. Review
  17. Review
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  19. Review
  20. Gender issues during the times of COVID-19 pandemic.European journal of neurology · 2021
    Article
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

11 authors.

Shahrzad NazariDepartment of Neuroscience and Addiction Studies, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran.
Amirhossein Azari JafariStudent Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.ORCID 0000-0003-3630-5028
Seyyedmohammadsadeq MirmoeeniStudent Research Committee, School of Medicine, Shahroud University of Medical Sciences, Shahroud, Iran.
Saeid SadeghianDepartment of Paediatric Neurology, Golestan Medical, Educational, and Research Centre, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.ORCID 0000-0002-7935-3401
Mohammad Eghbal HeidariStudents Scientific Research Center, Tehran University Medical Science, Tehran, Iran.
Siavash SadeghianAhvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
Farhad AssarzadeganDepartment of Neurology, Imam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Seyed Mahmoud PuormandImam Hossein Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Hamid EbadiDepartment of Clinical Neurosciences, University of Calgary, Calgary, AB, Canada.
Davood FathiBrain and Spinal Cord Injury Research Center, Neuroscience Institute, Tehran University of Medical Sciences, Tehran, Iran.ORCID 0000-0001-9592-1985
Sahar DalvandFunctional Neurosurgery Research Center, Shohada Tajrish Comprehensive Neurosurgical Center of Excellence, Shahid Beheshti University of Medical Sciences, Tehran, Iran.ORCID 0000-0003-3855-7982

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundAt the end of December 2019, a novel respiratory infection, initially reported in China, known as COVID-19 initially reported in China, and later known as COVID-19, led to a global pandemic. Despite many studies reporting respiratory infections as the primary manifestations of this illness, an increasing number of investigations have focused on the central nervous system (CNS) manifestations in COVID-19. In this study, we aimed to evaluate the CNS presentations in COVID-19 patients in an attempt to identify the common CNS features and provide a better overview to tackle this new pandemic.

methodsIn this systematic review and meta-analysis, we searched PubMed, Web of Science, Ovid, EMBASE, Scopus, and Google Scholar. Included studies were publications that reported the CNS features between 1 January 2020 and 20 April 2020. The data of selected studies were screened and extracted independently by four reviewers. Extracted data analyzed by using STATA statistical software. The study protocol registered with PROSPERO (CRD42020184456).

resultsOf 2,353 retrieved studies, we selected 64 studies with 11,687 patients after screening. Most of the studies were conducted in China (58 studies). The most common CNS symptom of COVID-19 was headache (8.69%, 95%CI: 6.76%-10.82%), dizziness (5.94%, 95%CI: 3.66%-8.22%), and impaired consciousness (1.90%, 95%CI: 1.0%-2.79%).

conclusionsThe growing number of studies has reported COVID-19, CNS presentations as remarkable manifestations that happen. Hence, understanding the CNS characteristics of COVID-19 can help us for better diagnosis and ultimately prevention of worse outcomes.

Indexed as

Central Nervous System DiseasesChinaCOVID-19DizzinessHeadacheHumansSARS-CoV-2consciousness disordersCOVID-19dizzinessheadachenervous system diseasesSARS-CoV-2 infection

Identifiers

PMID33421351
PMCPMC7994971

What OpenQuestion holds

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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 OpenQuestion graph.