Evidence map›Paper›PMID 27650390›Full record

ArticleBMC public health2016

Detecting and staging podoconiosis cases in North West Cameroon: positive predictive value of clinical screening of patients by community health workers and researchers.

Samuel Wanji, Jonas A Kengne-Ouafo, Fabrice R Datchoua-Poutcheu, Abdel Jelil Njouendou, Dizzel Bita Tayong, David D Sofeu-Feugaing, Nathalie Amvongo-Adjia, Bridget A Fovennso, Yolande F Longang-Tchounkeu, Fasil Tekola-Ayele and 3 more

Abstract read
In one paragraph

Article in BMC public health, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

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

  1. Global epidemiology of podoconiosis: A systematic review.PLoS neglected tropical diseases · 2018
    Pooled it
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  5. Review
  6. Developing and validating a clinical algorithm for the diagnosis of podoconiosis.Transactions of the Royal Society of Tropical Medicine and Hygiene · 2020
    Article
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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

13 authors.

Samuel WanjiParasites and Vector Biology research unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon. swanji@yahoo.fr.
Jonas A Kengne-OuafoParasites and Vector Biology research unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Fabrice R Datchoua-PoutcheuResearch Foundation for Tropical Diseases and the Environment (REFOTDE), Buea, Cameroon.
Abdel Jelil NjouendouParasites and Vector Biology research unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Dizzel Bita TayongParasites and Vector Biology research unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
David D Sofeu-FeugaingResearch Foundation for Tropical Diseases and the Environment (REFOTDE), Buea, Cameroon.
Nathalie Amvongo-AdjiaResearch Foundation for Tropical Diseases and the Environment (REFOTDE), Buea, Cameroon.
Bridget A FovennsoParasites and Vector Biology research unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Yolande F Longang-TchounkeuResearch Foundation for Tropical Diseases and the Environment (REFOTDE), Buea, Cameroon.
Fasil Tekola-AyeleCenter for Research on Genomics and Global Health, National Human Genome Research Institute, National Institutes of Health, Bethesda, MD, USA.
Peter A EnyongParasites and Vector Biology research unit (PAVBRU), Department of Microbiology and Parasitology, University of Buea, Buea, Cameroon.
Melanie J NewportWellcome Trust Centre for Global Health Research, Brighton and Sussex Medical School, Falmer Campus, Brighton, BN1 9PX, UK.
Gail DaveyWellcome Trust Centre for Global Health Research, Brighton and Sussex Medical School, Falmer Campus, Brighton, BN1 9PX, UK.

Funding

Medical Research Council MR/J008621/1Wellcome Trust 091956
6 · The paper itself

Abstract

backgroundThe suitability of using clinical assessment to identify patients with podoconiosis in endemic communities has previously been demonstrated. In this study, we explored the feasibility and accuracy of using Community Health Implementers (CHIs) for the large scale clinical screening of the population for podoconiosis in North-west Cameroon.

methodsBefore a regional podoconiosis mapping, 193 CHIs and 50 health personnel selected from 6 health districts were trained in the clinical diagnosis of the disease. After training, CHIs undertook community screening for podoconiosis patients under health personnel supervision. Identified cases were later re-examined by a research team with experience in the clinical identification of podoconiosis.

resultsCases were identified by CHIs with an overall positive predictive value (PPV) of 48.5% [34.1-70%]. They were more accurate in detecting advanced stages of the disease compared to early stages; OR 2.07, 95% CI = 1.15-3.73, p = 0.015 for all advanced stages). Accuracy of detecting cases showed statistically significant differences among health districts (χ2 = 25.30, p = 0.0001).

conclusionPodoconiosis being a stigmatized disease, the use of CHIs who are familiar to the community appears appropriate for identifying cases through clinical diagnosis. However, to improve their effectiveness and accuracy, more training, supervision and support are required. More emphasis must be given in identifying early clinical stages and in health districts with relatively lower PPVs.

Indexed as

Community Health WorkersHealth Services AccessibilityMedically Underserved AreaResearch PersonnelAdultCameroonElephantiasisFeasibility StudiesFemaleHumansMaleMass ScreeningRural PopulationSeverity of Illness IndexCameroonCommunity Health ImplementersPodoconiosisPredictive valueScreening

Identifiers

PMID27650390
PMCPMC5029032

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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.