Evidence map›Paper›PMID 22393383›Full record

ArticlePloS one2012

Point-of-care test for detection of urogenital chlamydia in women shows low sensitivity. A performance evaluation study in two clinics in Suriname.

Jannie J van der Helm, Leslie O A Sabajo, Antoon W Grunberg, Servaas A Morré, Arjen G C L Speksnijder, Henry J C de Vries

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed, 2 pooled it
6.3field-weighted citation impact, top 3% 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

22 citing papers in PubMed, 2 syntheses or guidelines pooled it, 52 citations in OpenAlex.

  1. Pooled it
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  5. Progress and Perspectives in Point of Care Testing for Urogenital Chlamydia trachomatis Infection: A Review.Medical science monitor : international medical journal of experimental and clinical research · 2020
    Review
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  7. Vaginal herb use andBMJ open · 2019
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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

6 authors at 4 institutions in 2 countries.

Jannie J van der HelmSTI Outpatient Clinic, Cluster Infectious Diseases, Public Health Service Amsterdam, Amsterdam, The Netherlands.
Leslie O A Sabajo
Antoon W Grunberg
Servaas A Morré
Arjen G C L Speksnijder
Henry J C de Vries
GGD Amsterdam · NLAcademic Hospital Paramaribo · SRMaastricht University · NLUniversity of Amsterdam · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn general, point-of-care (POC) tests for Chlamydia trachomatis (Ct) show disappointing test performance, especially disappointing sensitivity results. However, one study sponsored by the manufacturer (Diagnostics for the Real World) reported over 80% sensitivity with their Chlamydia Rapid Test (CRT). We evaluated the performance of this CRT in a non-manufacturer-sponsored trial.

methodsBetween July 2009 and February 2010, we included samples from 912 women in both high- and low-risk clinics for sexually transmitted infections (STIs) in Paramaribo, Suriname. Sensitivity, specificity, positive- and negative predictive values (PPV and NPV) for CRT compared to NAAT (Aptima, Gen-Probe) were determined. Quantitative Ct load and human cell load were determined in all CRT and/or NAAT positive samples.

resultsCRT compared to NAAT showed a sensitivity and specificity of 41.2% (95% CI, 31.9%-50.9%) and 96.4% (95% CI, 95.0%-97.5%), respectively. PPV and NPV were 59.2% (95% CI, 47.5%-70.1%) and 92.9% (95% CI, 91.0%-94.5%), respectively. Quantitative Ct bacterial load was 73 times higher in NAAT-positive/CRT-positive samples compared to NAAT-positive/CRT-negative samples (p<0.001). Human cell load did not differ between true-positive and false-negative CRT results (p = 0.835). Sensitivity of CRT in samples with low Ct load was 12.5% (95% CI, 5.2%-24.2%) and in samples with high Ct load 73.5% (95% CI, 59.9%-84.4%).

conclusionsThe sensitivity of CRT for detecting urogenital Ct in this non-manufacturer-sponsored study did not meet the expectations as described previously. The CRT missed samples with a low Ct load. Improved POC are needed as meaningful diagnostic to reduce the disease burden of Ct.

Indexed as

AdultChlamydia InfectionsChlamydia trachomatisFemaleHumansNucleic Acid Amplification TechniquesPoint-of-Care SystemsPredictive Value of TestsReagent StripsSensitivity and SpecificitySexually Transmitted DiseasesSurinameVaginal SmearsYoung AdultReagent Strips

Identifiers

PMID22393383
PMCPMC3290553
OpenAlexW2148929213

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.