Evidence map›Paper›PMID 21569472›Full record

ArticleBMC medicine2011

A decision aid to rule out pneumonia and reduce unnecessary prescriptions of antibiotics in primary care patients with cough and fever.

Johann Steurer, Ulrike Held, Anne Spaar, Birke Bausch, Marco Zoller, Roger Hunziker, Lucas M Bachmann

Abstract readEvaluation Study
In one paragraph

Article in BMC medicine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 3 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

26 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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  20. The added value of C-reactive protein measurement in diagnosing pneumonia in primary care: a meta-analysis of individual patient data.CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne · 2017
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors.

Johann SteurerHorten Center for Patient-Oriented Research and Knowledge Transfer, University of Zurich, and University Hospital of Zurich, Zurich, Switzerland. johann.steurer@usz.ch
Ulrike Held
Anne Spaar
Birke Bausch
Marco Zoller
Roger Hunziker
Lucas M Bachmann

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundPhysicians fear missing cases of pneumonia and treat many patients with signs of respiratory infection unnecessarily with antibiotics. This is an avoidable cause for the increasing worldwide problem of antibiotic resistance. We developed a user-friendly decision aid to rule out pneumonia and thus reduce the rate of needless prescriptions of antibiotics.

methodsThis was a prospective cohort study in which we enrolled patients older than 18 years with a new or worsened cough and fever without serious co-morbidities. Physicians recorded results of a standardized medical history and physical examination. C-reactive protein was measured and chest radiographs were obtained. We used Classification and Regression Trees to derive the decision tool.

resultsA total of 621 consenting eligible patients were studied, 598 were attending a primary care facility, were 48 years on average and 50% were male. Radiographic signs for pneumonia were present in 127 (20.5%) of patients. Antibiotics were prescribed to 234 (48.3%) of patients without pneumonia. In patients with C-reactive protein values below 10 μg/ml or patients presenting with C-reactive protein between 11 and 50 μg/ml, but without dyspnoea and daily fever, pneumonia can be ruled out. By applying this rule in clinical practice antibiotic prescription could be reduced by 9.1% (95% confidence interval (CI): 6.4 to 11.8).

conclusionsFollowing validation and confirmation in new patient samples, this tool could help rule out pneumonia and be used to reduce unnecessary antibiotic prescriptions in patients presenting with cough and fever in primary care. The algorithm might be especially useful in those instances where taking a medical history and physical examination alone are inconclusive for ruling out pneumonia.

Indexed as

Decision Support TechniquesAdultAgedAnti-Bacterial AgentsCohort StudiesCoughC-Reactive ProteinDrug UtilizationFemaleFever of Unknown OriginHumansMaleMiddle AgedPneumonia, BacterialPrescriptionsPrimary Health CareAnti-Bacterial AgentsC-Reactive Protein

Identifiers

PMID21569472
PMCPMC3118372

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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.