Evidence map›Paper›PMID 36870966›Full record

ArticleMalaria journal2023

Accuracy of diagnosis among clinical malaria patients: comparing microscopy, RDT and a highly sensitive quantitative PCR looking at the implications for submicroscopic infections.

Stephen Opoku Afriyie, Thomas Kwame Addison, Yilekal Gebre, Abdul-Hakim Mutala, Kwasi Baako Antwi, Dawood Ackom Abbas, Kofi Agyapong Addo, Austine Tweneboah, Nana Kwame Ayisi-Boateng, Cristian Koepfli and 1 more

Open access · goldAbstract read
In one paragraph

Article in Malaria journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed, 3 pooled it
27.8field-weighted citation impact, top 1% of its field
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

71 citing papers in PubMed, 3 syntheses or guidelines pooled it, 93 citations in OpenAlex.

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  19. Molecular, Transcriptomic, and Proteomic Characterization ofmedRxiv : the preprint server for health sciences · 2026
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11 more citing papers are in PubMed but not listed here.

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

11 authors at 2 institutions in 2 countries.

Stephen Opoku AfriyieDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Thomas Kwame AddisonDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Yilekal GebreDepartment of Biological Sciences, University of Notre Dame, South Bend, IN, USA.
Abdul-Hakim MutalaDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Kwasi Baako AntwiDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Dawood Ackom AbbasDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Kofi Agyapong AddoDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Austine TweneboahDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana.
Nana Kwame Ayisi-BoatengInfectious Disease Unit, University Hospital, KNUST, Kumasi, Ghana.
Cristian KoepfliDepartment of Biological Sciences, University of Notre Dame, South Bend, IN, USA. ckoepfli@nd.edu.
Kingsley BaduDepartment of Theoretical and Applied Biology, Kwame Nkrumah University of Science and Technology (KNUST), Kumasi, Ghana. kingsbadu@gmail.com.
Kwame Nkrumah University of Science and Technology · GHUniversity of Notre Dame · US

Funding

A Novel Droplet Digital PCR Method for Population-based Plasmodium falciparum hrp2 Deletion DiagnosisR21AI137891 · NIAID · UNIVERSITY OF NOTRE DAME · PI KOEPFLI, CRISTIAN · 2018 to 2019
$425k
NIAID NIH HHS R21 AI137891
6 · The paper itself

Abstract

backgroundThe World Health Organization recommends parasitological confirmation of all suspected malaria cases by microscopy or rapid diagnostic tests (RDTs) before treatment. These conventional tools are widely used for point-of-care diagnosis in spite of their poor sensitivity at low parasite density. Previous studies in Ghana have compared microscopy and RDT using standard 18S rRNA PCR as reference with varying outcomes. However, how these conventional tools compare with ultrasensitive varATS qPCR has not been studied. This study, therefore, sought to investigate the clinical performance of microscopy and RDT assuming highly sensitive varATS qPCR as gold standard.

methods1040 suspected malaria patients were recruited from two primary health care centers in the Ashanti Region of Ghana and tested for malaria by microscopy, RDT, and varATS qPCR. The sensitivity, specificity, and predictive values were assessed using varATS qPCR as gold standard.

resultsParasite prevalence was 17.5%, 24.5%, and 42.1% by microscopy, RDT, and varATS qPCR respectively. Using varATS qPCR as the standard, RDT was more sensitive (55.7% vs 39.3%), equally specific (98.2% vs 98.3%), and reported higher positive (95.7% vs 94.5%) and negative predictive values (75.3% vs 69.0%) than microscopy. Consequently, RDT recorded better diagnostic agreement (kappa = 0.571) with varATS qPCR than microscopy (kappa = 0.409) for clinical detection of malaria.

conclusionsRDT outperformed microscopy for the diagnosis of Plasmodium falciparum malaria in the study. However, both tests missed over 40% of infections that were detected by varATS qPCR. Novel tools are needed to ensure prompt diagnosis of all clinical malaria cases.

Indexed as

MalariaMalaria, FalciparumGhanaHumansMicroscopyPolymerase Chain ReactionMalariaMicroscopyRapid diagnostic testSensitivityvarATS qPCR

Identifiers

PMID36870966
PMCPMC9985253
OpenAlexW4323074691

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.