Evidence map›Paper›PMID 21631919›Full record

SynthesisBMC medicine2011

Predicting streptococcal pharyngitis in adults in primary care: a systematic review of the diagnostic accuracy of symptoms and signs and validation of the Centor score.

Jolien Aalbers, Kirsty K O'Brien, Wai-Sun Chan, Gavin A Falk, Conor Teljeur, Borislav D Dimitrov, Tom Fahey

Open access · goldAbstract readMeta-AnalysisSystematic ReviewValidation Study
In one paragraph

Synthesis in BMC medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 47 papers, 4 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
47citing papers in PubMed, 4 pooled it
5.3field-weighted citation impact, top 5% 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

47 citing papers in PubMed, 4 syntheses or guidelines pooled it, 94 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Comparison of Centor and McIsaac scores in primary care: a meta-analysis over multiple thresholds.The British journal of general practice : the journal of the Royal College of General Practitioners · 2020
    Pooled it
  4. Clinical gestalt to diagnose pneumonia, sinusitis, and pharyngitis: a meta-analysis.The British journal of general practice : the journal of the Royal College of General Practitioners · 2019
    Pooled it
  5. Trial
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  9. Review
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  11. Lemierre syndrome: a hidden complication of sore throats.International journal of emergency medicine · 2023
    Article
  12. Review
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  15. Article
  16. Article
  17. Review
  18. Observational
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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 at 2 institutions in 1 country.

Jolien AalbersHRB Centre for Primary Care Research, Department of General Practice, RCSI Medical School, Dublin, Republic of Ireland.
Kirsty K O'Brien
Wai-Sun Chan
Gavin A Falk
Conor Teljeur
Borislav D Dimitrov
Tom Fahey
Royal College of Surgeons in Ireland · IETallaght University Hospital · IE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundStratifying patients with a sore throat into the probability of having an underlying bacterial or viral cause may be helpful in targeting antibiotic treatment. We sought to assess the diagnostic accuracy of signs and symptoms and validate a clinical prediction rule (CPR), the Centor score, for predicting group A β-haemolytic streptococcal (GABHS) pharyngitis in adults (> 14 years of age) presenting with sore throat symptoms.

methodsA systematic literature search was performed up to July 2010. Studies that assessed the diagnostic accuracy of signs and symptoms and/or validated the Centor score were included. For the analysis of the diagnostic accuracy of signs and symptoms and the Centor score, studies were combined using a bivariate random effects model, while for the calibration analysis of the Centor score, a random effects model was used.

resultsA total of 21 studies incorporating 4,839 patients were included in the meta-analysis on diagnostic accuracy of signs and symptoms. The results were heterogeneous and suggest that individual signs and symptoms generate only small shifts in post-test probability (range positive likelihood ratio (+LR) 1.45-2.33, -LR 0.54-0.72). As a decision rule for considering antibiotic prescribing (score ≥ 3), the Centor score has reasonable specificity (0.82, 95% CI 0.72 to 0.88) and a post-test probability of 12% to 40% based on a prior prevalence of 5% to 20%. Pooled calibration shows no significant difference between the numbers of patients predicted and observed to have GABHS pharyngitis across strata of Centor score (0-1 risk ratio (RR) 0.72, 95% CI 0.49 to 1.06; 2-3 RR 0.93, 95% CI 0.73 to 1.17; 4 RR 1.14, 95% CI 0.95 to 1.37).

conclusionsIndividual signs and symptoms are not powerful enough to discriminate GABHS pharyngitis from other types of sore throat. The Centor score is a well calibrated CPR for estimating the probability of GABHS pharyngitis. The Centor score can enhance appropriate prescribing of antibiotics, but should be used with caution in low prevalence settings of GABHS pharyngitis such as primary care.

Indexed as

AdultDiagnosis, DifferentialHumansPharyngitisPredictive Value of TestsPrimary Health CareStreptococcal InfectionsStreptococcus pyogenes

Identifiers

PMID21631919
PMCPMC3127779
OpenAlexW2105833138

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.