Evidence map›Paper›PMID 41437138›Full record

SynthesisSystematic reviews2025

Prevalence of sickle cell disease and sickle cell traits among children and adolescents in Nigeria: a systematic review and meta-analysis.

Amudalat Issa, Olayinka Rasheed Ibrahim, Rasheedat M Ibraheem, Aisha F Lawal, Mariam Abdulbaki, Mohammed Baba AbdulKadir, Biodun Sulyman Alabi, Kolade Samuel Ernest

Abstract readSystematic ReviewMeta-Analysis
In one paragraph

Synthesis in Systematic reviews, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

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

  1. Pooled it
  2. Pooled it
  3. Article
  4. Top ten surgical tricks-penile prosthesis with corporal fibrosis.International journal of impotence research · 2026
    Review
  5. Article
  6. Integrated Newborn Screening in Nigeria: The Way Forward, A Workshop Report.International journal of neonatal screening · 2026
    Article
  7. Quantitative Volumetric Analysis of the Brain Using Magnetic Resonance Imaging in Sickle Cell Anaemia.Nigerian medical journal : journal of the Nigeria Medical Association
    Review
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.

Amudalat IssaChildren Specialist Hospital, Ilorin, Nigeria.
Olayinka Rasheed IbrahimDepartment of Pediatrics, University of Global Health Equity, Kigali, Rwanda. iolayinka@ughe.org.ORCID 0000-0002-2621-6593
Rasheedat M IbraheemDepartment of Pediatrics and Child Health, University of Ilorin, Ilorin, Nigeria.
Aisha F LawalChildren Specialist Hospital, Ilorin, Nigeria.
Mariam AbdulbakiDepartment of Obstetrics and Gynecology, Kwara State University Teaching Hospital, Ilorin, Nigeria.
Mohammed Baba AbdulKadirDepartment of Pediatrics and Child Health, University of Ilorin, Ilorin, Nigeria.
Biodun Sulyman AlabiDepartment of ENT, University of Ilorin, Ilorin, Nigeria.
Kolade Samuel ErnestDepartment of Pediatrics and Child Health, University of Ilorin, Ilorin, Nigeria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundSickle cell disease (SCD) is one of the most common genetic disorders in the world, with Nigeria believed to have the highest burden. Despite the high burden in the country, the true prevalence of SCD and its main driver-the sickle cell trait (SCT)-is unknown, which is important for planning and resource allocation. Hence, we conducted a systematic review and meta-analysis of the prevalence of SCD, SCT, and associated factors in Nigerian children and adolescents.

methodsUsing the PRISMA guidelines [ID: CRD42024556354], we systematically search the following major databases: AJOL, Google Scholar, PubMed, EMBASE, Cochrane Library, Scopus, and Web of Science collections from January 1950 to October 2024 on Nigerian children and adolescents with SCD and/or SCT. The quality of the studies was assessed using the Newcastle-Ottawa Scale adapted for cross-sectional studies. We performed a cumulative meta-analysis to estimate the pooled prevalence and associated factors for SCD and SCT.

resultsThirty studies, comprising 211,938 participants, were included in the final analysis after stepwise screening. The pooled prevalences of SCD and SCT were 4.0% (95% CI 3.0 to 6.0, I

conclusionThe pooled prevalence of SCD and SCT among children and adolescents was high, with the highest burden occurring in the northwestern geopolitical zone in Nigeria. In addition, there was no relationship between sex, socioeconomic class, and prevalence of SCD. SYSTEMATIC REVIEW REGISTRATION: PROSPERO ID: CRD42024556354.

Indexed as

Anemia, Sickle CellSickle Cell TraitAdolescentChildHumansNigeriaPrevalenceAdolescentsChildrenNigeriaPrevalenceSickle cell diseaseSickle cell trait

Identifiers

PMID41437138
PMCPMC12849485

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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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.