Evidence map›Paper›PMID 36670466›Full record

SynthesisEuropean journal of medical research2023

The global prevalence of primary central nervous system tumors: a systematic review and meta-analysis.

Nader Salari, Hooman Ghasemi, Reza Fatahian, Kamran Mansouri, Sadat Dokaneheifard, Mohammad Hossain Shiri, Mahvan Hemmati, Masoud Mohammadi

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in European journal of medical research, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 56 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
56citing papers in PubMed, 2 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

56 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Annals of nuclear medicine · 2025
    Trial
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  6. Rehabilitation in patients with primary brain tumors: a scoping review of current guideline recommendations.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
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  10. Review
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  15. {ZnMolecules (Basel, Switzerland) · 2026
    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.

Nader SalariDepartment of Biostatistics, School of Health, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Hooman GhasemiStudent Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Reza FatahianDepartment of Neurosurgery, School of Medicine, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Kamran MansouriMedical Biology Research Centre, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Sadat DokaneheifardDepartment of Human Genetics, Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL, 33136, USA.
Mohammad Hossain ShiriStudent Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Mahvan HemmatiStudent Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran.
Masoud MohammadiCellular and Molecular Research Center, Gerash University of Medical Sciences, Gerash, Iran. masoud.mohammadi1989@yahoo.com.ORCID http://orcid.org/0000-0002-5722-8300

Funding

Deputy for Research and Technology, Kermanshah University of Medical Sciences 4000628
6 · The paper itself

Abstract

backgroundPrimary central nervous system (CNS) tumors are a heterogeneous group of neoplasms, including benign and malignant tumors. Since there are many heterogeneities in the prevalence reported in previous studies on this type of tumor, this study was performed to determine the overall prevalence of different primary CNS tumors.

methodThe study was conducted as a systematic review and meta-analysis by searching international databases, including PubMed, Scopus, Science Direct, Web of science, and the Google Scholar search engine until August 2020. After transferring the studies to information management software (EndNote) and eliminating duplicate studies, the remaining studies were reviewed based on inclusion and exclusion criteria according to three stages of primary and secondary evaluation and qualitative evaluation. Comprehensive Meta-Analysis software, Begg, Mazumdar, and I

resultsAfter performing the systematic review steps, 80 studies were included for final analysis. Based on 8 studies, the prevalence of brain tumors was 70.9%. Also, studies on 7 other studies showed that the prevalence of spinal tumors was 12.2%. A review of 14 studies showed that the prevalence of neuroepithelial tumors was 34.7%. The analysis of 27 studies reported a prevalence of glioma tumors of 42.8%. Analyses performed on other studies showed that the prevalence of pituitary adenomas was 12.2%, embryonal tumors 3.1%, ependymal tumors 3.2%, meningiomas 24.1%, glial tumors 0.8%, astrocytic 20.3%, oligodendroglial 3.9%, glioblastoma 17.7%, schwannoma 6.7%, medulloblastoma 7.7% and Polycystic astrocytomas 3.8%.

conclusionAs a result, it can be stated that brain tumors are the most common type of primary CNS tumors. It was also observed that tumors involving neuroepithelial cells are more common in patients than other types of tumors.

Indexed as

Brain NeoplasmsCentral Nervous System NeoplasmsGlioblastomaHumansPrevalenceBrain tumorCNS tumorsPrevalenceSystematic review

Identifiers

PMID36670466
PMCPMC9854075

What OpenQuestion holds

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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.