Evidence map›Paper›PMID 28864674›Full record

SynthesisNeurology2017

Neurologic complications of sickle cell disease in Africa: A systematic review and meta-analysis.

Jean Jacques Noubiap, Michel K Mengnjo, Nicolas Nicastro, Joseph Kamtchum-Tatuene

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Neurology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 1 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

32 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Global burden of moyamoya syndrome in pediatric sickle cell disease and implications for the neurosurgical workforce: a systematic review.Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery · 2026
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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

4 authors.

Jean Jacques NoubiapFrom the Department of Medicine (J.J.N.), Groote Schuur Hospital and University of Cape Town, South Africa; Department of Medicine and Medical Specialties, Faculty of Medicine and Biomedical Sciences (M.K.M.), University of Yaoundé, Cameroon; Division of Neurorehabilitation, Department of Clinical Neurosciences (N.N.), Geneva University Hospitals, Switzerland; Brain Infections Group, Institute of Infection and Global Health (J.K.-T.), University of Liverpool; and Department of Neurology (J.K.-T.), The Walton Centre for Neurology and Neurosurgery, Liverpool, UK.
Michel K MengnjoFrom the Department of Medicine (J.J.N.), Groote Schuur Hospital and University of Cape Town, South Africa; Department of Medicine and Medical Specialties, Faculty of Medicine and Biomedical Sciences (M.K.M.), University of Yaoundé, Cameroon; Division of Neurorehabilitation, Department of Clinical Neurosciences (N.N.), Geneva University Hospitals, Switzerland; Brain Infections Group, Institute of Infection and Global Health (J.K.-T.), University of Liverpool; and Department of Neurology (J.K.-T.), The Walton Centre for Neurology and Neurosurgery, Liverpool, UK.
Nicolas NicastroFrom the Department of Medicine (J.J.N.), Groote Schuur Hospital and University of Cape Town, South Africa; Department of Medicine and Medical Specialties, Faculty of Medicine and Biomedical Sciences (M.K.M.), University of Yaoundé, Cameroon; Division of Neurorehabilitation, Department of Clinical Neurosciences (N.N.), Geneva University Hospitals, Switzerland; Brain Infections Group, Institute of Infection and Global Health (J.K.-T.), University of Liverpool; and Department of Neurology (J.K.-T.), The Walton Centre for Neurology and Neurosurgery, Liverpool, UK.
Joseph Kamtchum-TatueneFrom the Department of Medicine (J.J.N.), Groote Schuur Hospital and University of Cape Town, South Africa; Department of Medicine and Medical Specialties, Faculty of Medicine and Biomedical Sciences (M.K.M.), University of Yaoundé, Cameroon; Division of Neurorehabilitation, Department of Clinical Neurosciences (N.N.), Geneva University Hospitals, Switzerland; Brain Infections Group, Institute of Infection and Global Health (J.K.-T.), University of Liverpool; and Department of Neurology (J.K.-T.), The Walton Centre for Neurology and Neurosurgery, Liverpool, UK. tatuene@liverpool.ac.uk.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectiveTo summarize prevalence data on the neurologic complications of sickle cell disease (SCD) in Africa.

methodsWe searched EMBASE, PubMed, and African Index Medicus to identify all relevant articles published from inception to May 31, 2016. Each study was reviewed for methodologic quality. A random-effects model was used to estimate the prevalence of neurologic complications of SCD across studies.

resultsThirty-one studies were included. Methodologic quality was high or moderate in 90% of studies. Stroke, conditional and abnormal cerebral blood flow, seizures, and headache were the complications most frequently reported, with overall prevalence rates of 4.2%, 10.6%, 6.1%, 4.4%, and 18.9%, respectively. Some complications, like silent brain infarcts, peripheral neuropathies, neurocognitive deficits, or moyamoya disease, have been rarely or not studied at all in the African setting. Incidence data were scarce and of poor quality.

conclusionsThe burden of neurologic complications of SCD is important in Africa and most likely underestimated. A better evaluation of this burden requires larger prospective studies using standard up-to-date screening methods. Accessibility to diagnostic tools such as neuroimaging, transcranial Doppler, EEG, and neuropsychological evaluation, as well as to preventive and therapeutic interventions and trained health care providers, should be improved in routine clinical practice.

Indexed as

AfricaAnemia, Sickle CellDatabases, BibliographicHumansNervous System Diseases

Identifiers

PMID28864674
PMCPMC5631172

What OpenQuestion holds

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LicenceCC BY
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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.