Evidence map›Paper›PMID 33882899›Full record

SynthesisBMC pediatrics2021

Birth prevalence of neural tube defects and associated risk factors in Africa: a systematic review and meta-analysis.

Mohammed Oumer, Ashenafi Tazebew, Mezgebu Silamsaw

Registry-linked trialAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMC pediatrics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05935631 (Feasibility, Acceptability and Directional Signal Effect on Blood Folate Levels of Iodized Salt Fortified With Folic Acid), which is not on this map. Cited by 21 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing 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.

NCT05935631 nacompletednot on this mapstarted 2023, after this paper: background citation

Feasibility, Acceptability and Directional Signal Effect on Blood Folate Levels of Iodized Salt Fortified With Folic Acid: Clinical Study

TypeinterventionalSponsorUniversity of Alabama at BirminghamRan2023 to 2023Enrolled32ConditionsNeural Tube Defects, Folic Acid Deficiency, FortificationArmsSalt with folic acid and iodine
3 · Its place in the literature

Who cites it

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

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  11. A global survey of neurosurgeons' awareness of neural tube defect prevalence, prevention strategies, and their clinical time allocation to spina bifida care.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2025
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  19. Neural tube defects: a review of global prevalence, causes, and primary prevention.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2023
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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

3 authors.

Mohammed OumerDepartment of Human Anatomy, College of Medicine and Health Sciences, School of Medicine, University of Gondar, Gondar, Amhara, Ethiopia. Mohammed.Oumer@uog.edu.et.ORCID 0000-0003-4289-8712
Ashenafi TazebewDepartments of Pediatrics and Child Health, College of Medicine and Health Sciences, School of Medicine, University of Gondar, Gondar, Amhara, Ethiopia.
Mezgebu SilamsawDepartment of Internal Medicine, College of Medicine and Health Sciences, School of Medicine, University of Gondar, Gondar, Amhara, Ethiopia.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundNeural tube defects are common congenital anomalies that result from early malformation in the development of the spinal cord and brain. It is related to substantial mortality, morbidity, disability, and psychological and economic costs. The aim of this review is to determine the pooled birth prevalence of neural tube defects and associated risk factors in Africa.

methodsThe first outcome of this review was the pooled birth prevalence of the neural tube defects and the second outcome was the pooled measure of association between neural tube defects and associated risk factors in Africa. We systematically searched PubMed, PubMed Central, Joanna Briggs Institute, Google Scopus, Cochrane Library, African Journals Online, Web of Science, Science Direct, Google Scholar, and Medline databases. The heterogeneity of studies was assessed using the Cochrane Q test statistic, I

resultsForty-three studies with a total of 6086,384 participants were included in this systematic review and meta-analysis. The pooled birth prevalence of the neural tube defects was 21.42 (95% CI (Confidence Interval): 19.29, 23.56) per 10,000 births. A high pooled birth prevalence of neural tube defects was detected in Algeria 75 (95% CI: 64.98, 85.02), Ethiopia 61.43 (95% CI: 46.70, 76.16), Eritrea 39 (95% CI: 32.88, 45.12), and Nigeria 32.77 (95% CI: 21.94, 43.59) per 10,000 births. The prevalence of neural tube defects has increased over time. Taking folic acid during early pregnancy, consanguineous marriage, male sex, and substance abuse during pregnancy were assessed and none of them was significant.

conclusionsThe pooled birth prevalence of neural tube defects in Africa was found to be high. The risk factors evaluated were not found significant.

Indexed as

Neural Tube DefectsEthiopiaFemaleHumansMaleNigeriaPregnancyPrevalenceRisk FactorsAfricaNeural tube defectsSystematic review and meta-analysis

Identifiers

PMID33882899
PMCPMC8058994

What OpenQuestion holds

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Registered trials

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.