Evidence map›Paper›PMID 24265775›Full record

ArticlePloS one2013

Using a web-based application to define the accuracy of diagnostic tests when the gold standard is imperfect.

Cherry Lim, Prapass Wannapinij, Lisa White, Nicholas P J Day, Ben S Cooper, Sharon J Peacock, Direk Limmathurotsakul

Registry-linked trialAbstract read
In one paragraph

Article in PloS one, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04673487 (Comparative Study of Commercially Available Typhoid Point of Care Tests to Benchmark Current and Emerging Tools), which is not on this map. Cited by 21 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
21citing 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.

NCT04673487 unknown statusnot on this mapstarted 2021, after this paper: background citation

Comparative Study of Commercially Available Typhoid Point of Care Tests to Benchmark Current and Emerging Tools

TypeobservationalSponsorKenya Medical Research InstituteRan2021 to 2021Enrolled2,000ConditionsTyphoid FeverArms1. SD Bioline Salmonella Typhi IgG/IgM Fast test, 2. Typhidot Rapid IgG/IgM combo test, 3. TUBEX TF test, 4.Typhoid IgG/IgM Combo Rapid Test CE, 5. Enterocheck WB test, 6. Test-itTM Typhoid IgM test
3 · Its place in the literature

Who cites it

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

  1. Diagnostic accuracy of leptospirosis whole-cell lateral flow assays: a systematic review and meta-analysis.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2019
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  13. [Evaluation of two COVID-19 antigenic diagnostic tests:The Pan African medical journal · 2021
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  16. A comparison of two molecular methods for diagnosing leptospirosis from three different sample types in patients presenting with fever in Laos.Clinical microbiology and infection : the official publication of the European Society of Clinical Microbiology and Infectious Diseases · 2018
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  18. Melioidosis diagnostic workshop, 2013.Emerging infectious diseases · 2015
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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

7 authors.

Cherry LimMahidol-Oxford Tropical Medicine Research Unit, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Prapass Wannapinij
Lisa White
Nicholas P J Day
Ben S Cooper
Sharon J Peacock
Direk Limmathurotsakul

Funding

NIAID NIH HHS Y01 AI004906NIAID NIH HHS Y1-AI-4906-09Wellcome Trust 089275Wellcome Trust 089275/Z/09/Z
6 · The paper itself

Abstract

backgroundEstimates of the sensitivity and specificity for new diagnostic tests based on evaluation against a known gold standard are imprecise when the accuracy of the gold standard is imperfect. Bayesian latent class models (LCMs) can be helpful under these circumstances, but the necessary analysis requires expertise in computational programming. Here, we describe open-access web-based applications that allow non-experts to apply Bayesian LCMs to their own data sets via a user-friendly interface. METHODS/PRINCIPAL

findingsApplications for Bayesian LCMs were constructed on a web server using R and WinBUGS programs. The models provided (http://mice.tropmedres.ac) include two Bayesian LCMs: the two-tests in two-population model (Hui and Walter model) and the three-tests in one-population model (Walter and Irwig model). Both models are available with simplified and advanced interfaces. In the former, all settings for Bayesian statistics are fixed as defaults. Users input their data set into a table provided on the webpage. Disease prevalence and accuracy of diagnostic tests are then estimated using the Bayesian LCM, and provided on the web page within a few minutes. With the advanced interfaces, experienced researchers can modify all settings in the models as needed. These settings include correlation among diagnostic test results and prior distributions for all unknown parameters. The web pages provide worked examples with both models using the original data sets presented by Hui and Walter in 1980, and by Walter and Irwig in 1988. We also illustrate the utility of the advanced interface using the Walter and Irwig model on a data set from a recent melioidosis study. The results obtained from the web-based applications were comparable to those published previously.

conclusionsThe newly developed web-based applications are open-access and provide an important new resource for researchers worldwide to evaluate new diagnostic tests.

Indexed as

InternetSoftwareBayes TheoremDiagnostic Techniques and ProceduresReference StandardsSensitivity and SpecificityUser-Computer Interface

Identifiers

PMID24265775
PMCPMC3827152

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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.