Evidence map›Paper›PMID 33632771›Full record

ArticleBMJ global health2021

Geographical and temporal variation in reduction of malaria infection among children under 5 years of age throughout Nigeria.

Wellington Oyibo, Godwin Ntadom, Perpetua Uhomoibhi, Olusola Oresanya, Nnenna Ogbulafor, Olufemi Ajumobi, Festus Okoh, Kolawole Maxwell, Sonachi Ezeiru, Ernest Nwokolo and 4 more

Abstract read
In one paragraph

Article in BMJ global health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing 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

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

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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

14 authors.

Wellington OyiboANDI Centre of Excellence for Malaria Diagnosis, College of Medicine, University of Lagos, Lagos, Nigeria david.conway@lshtm.ac.uk wellao@yahoo.com.ORCID 0000-0002-5730-5396
Godwin NtadomNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
Perpetua UhomoibhiNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
Olusola OresanyaMalaria Consortium Nigeria, Abuja, Nigeria.
Nnenna OgbulaforNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
Olufemi AjumobiNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
Festus OkohNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
Kolawole MaxwellMalaria Consortium Nigeria, Abuja, Nigeria.
Sonachi EzeiruCatholic Relief Services (CRS), Federal Capital Territory, Abuja, Nigeria.
Ernest NwokoloSociety for Family Health, Abuja, Nigeria.
Chioma AmajohCommunity Vision Initiative (CVI), Abuja, Nigeria.
Nnenna EzeigweNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
Mohammed AuduNational Malaria Elimination Programme (NMEP), Federal Ministry of Health, Abuja, Nigeria.
David ConwayDepartment of Infection Biology, Faculty of Infectious and Tropical Diseases, London School of Hygiene and Tropical Medicine, London, UK david.conway@lshtm.ac.uk wellao@yahoo.com.ORCID 0000-0002-8711-3037

Funding

Medical Research Council MR/S009760/1
6 · The paper itself

Abstract

introductionGlobal progress in reducing malaria has stalled since 2015. Analysis of the situation is particularly needed in Nigeria, the country with by far the largest share of the burden, where approximately a quarter of all cases in the world are estimated to occur.

methodsWe analysed data from three nationwide surveys (Malaria Indicator Surveys in 2010 and 2015 and a National Demographic and Health Survey in 2018), with malaria parasite prevalence in children under 5 years of age determined by sampling from all 36 states of Nigeria, and blood slide microscopy performed in the same accredited laboratory for all samples. Changes over time were evaluated by calculating prevalence ratio (PR) values with 95% CIs for each state, together with Mantel-Haenszel-adjusted PRs (PR

resultsBetween 2010 and 2018, there were significant reductions in parasite prevalence in 25 states, but not in the remaining 11 states. Prevalence decreased most in southern zones of the country (South West PR

conclusionReductions in malaria infection in children under 5 have occurred in most individual states in Nigeria since 2010, but substantial geographical variation in the timing and extent indicate challenges to be overcome to enable global malaria reduction.

Indexed as

MalariaChildChild, PreschoolHumansNigeriaSurveys and Questionnairesdiagnostics and toolsepidemiologymalariaprevention strategies

Identifiers

PMID33632771
PMCPMC7908906

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.