Evidence mapPaperPMID 33979771Full record

ArticleMultiple sclerosis and related disorders2021

Can coronavirus disease 2019 (COVID-19) trigger exacerbation of multiple sclerosis? A retrospective study.

Mahdi Barzegar, Saeed Vaheb, Omid Mirmosayyeb, Alireza Afshari-Safavi, Nasim Nehzat, Vahid Shaygannejad

Open access · bronzeAbstract read
In one paragraph

Article in Multiple sclerosis and related disorders, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
39citing papers in PubMed, 4 pooled it
9.3field-weighted citation impact, top 1% 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

39 citing papers in PubMed, 4 syntheses or guidelines pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Pooled it
  4. Pooled it
  5. COVID-19 and Radiological Progression of Multiple Sclerosis.Diagnostics (Basel, Switzerland) · 2026
    Article
  6. Article
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Protective effect of vaccination on the risk of cardiovascular disease after SARS-CoV-2 infection.Clinical research in cardiology : official journal of the German Cardiac Society · 2024
    Article
  14. Article
  15. Vaccination frequency in people newly diagnosed with multiple sclerosis.Multiple sclerosis (Houndmills, Basingstoke, England) · 2023
    Article
  16. Review
  17. Review
  18. Review
  19. Article
  20. Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Mahdi BarzegarDepartment of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Saeed VahebIsfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Student Research Committee, Faculty of Paramedicine, Isfahan University of Medical Sciences, Isfahan, Iran.
Omid MirmosayyebDepartment of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Alireza Afshari-SafaviIsfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran; Department of Biostatistics and Epidemiology, Faculty of Health, North Khorasan University of Medical Sciences, Bojnurd, Iran.
Nasim NehzatIsfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran.
Vahid ShaygannejadDepartment of Neurology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran; Isfahan Neurosciences Research Center, Isfahan University of Medical Sciences, Isfahan, Iran. Electronic address: shaygannejad@med.mui.ac.ir.
Isfahan University of Medical Sciences · IR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The effect of coronavirus disease (COVID-19) on the risk of relapse in multiple sclerosis (MS) have been unknown. In this retrospective study of 41 relapsing-remitting MS patients, number of relapses in pre-defined at risk-period (ARP) was compared with the previous two years. During the previous two years, a total of 32 attacks was reported, which 5 (15.6%) were during the at-risk period. After adjusting for age and sex, there was an increased risk of attack during ARP compared to the previous two years (RR: 2.566, 95%CI: 1.075-6.124, P=0.034). Our preliminary study suggested that COVID-19 can trigger exacerbation of MS.

Indexed as

COVID-19Multiple SclerosisMultiple Sclerosis, Relapsing-RemittingHumansRecurrenceRetrospective StudiesSARS-CoV-2CoronavirusExacerbationInfectionMultiple sclerosisRelapse

Identifiers

PMID33979771
PMCPMC8036166
OpenAlexW3155714444

What Socratic holds

Textmetadata
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 Socratic graph.