Evidence map›Paper›PMID 20594439›Full record

ArticleThe British journal of general practice : the journal of the Royal College of General Practitioners2010

Validating the prediction of lower urinary tract infection in primary care: sensitivity and specificity of urinary dipsticks and clinical scores in women.

Paul Little, Sheila Turner, Kate Rumsby, Rachel Jones, Greg Warner, Michael Moore, J Andrew Lowes, Helen Smith, Catherine Hawke, Geraldine Leydon and 1 more

Abstract readMulticenter StudyValidation Study
In one paragraph

Article in The British journal of general practice : the journal of the Royal College of General Practitioners, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–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

27 citing papers in PubMed.

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  3. Point-of-care urine culture for managing urinary tract infection in primary care: a randomised controlled trial of clinical and cost-effectiveness.The British journal of general practice : the journal of the Royal College of General Practitioners · 2018
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  20. Variations in presentation, management, and patient outcomes of urinary tract infection: a prospective four-country primary care observational cohort study.The British journal of general practice : the journal of the Royal College of General Practitioners · 2017
    Observational
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors.

Paul LittleCommunity Clinical Sciences Division, University of Southampton, Aldermoor Health Centre, Aldermoor Close, Southampton. p.little@soton.ac.uk
Sheila Turner
Kate Rumsby
Rachel Jones
Greg Warner
Michael Moore
J Andrew Lowes
Helen Smith
Catherine Hawke
Geraldine Leydon
Mark Mullee

Funding

Department of Health 97/14/06
6 · The paper itself

Abstract

backgroundDipsticks are one of the most commonly used near-patient tests in primary care, but few clinical or dipstick algorithms have been rigorously developed.

aimTo confirm whether previously documented clinical and dipstick variables and algorithms predict laboratory diagnosis of urinary tract infection (UTI). DESIGN OF STUDY: Validation study.

settingPrimary care.

methodA total of 434 adult females with suspected lower UTI had bacteriuria assessed using the European Urinalysis Guidelines.

resultsSixty-six per cent of patients had confirmed UTI. The predictive values of nitrite, leucocyte esterase (+ or greater), and blood (haemolysed trace or greater) were confirmed (independent multivariate odds ratios = 5.6, 3.5, and 2.1 respectively). The previously developed dipstick rule--based on presence of nitrite, or both leucocytes and blood-- was moderately sensitive (75%) but less specific (66%; positive predictive value [PPV] 81%, negative predictive value [NPV] 57%). Predictive values were improved by varying the cut-off point: NPV was 76% for all three dipstick results being negative; the PPV was 92% for having nitrite and either blood or leucocyte esterase. Urine offensive smell was not found to be predictive in this sample; for a clinical score using the remaining three predictive clinical features (urine cloudiness, dysuria, and nocturia), NPV was 67% for none of the features, and PPV was 82% for three features.

conclusionA clinical score is of limited value in increasing diagnostic precision. Dipstick results can modestly improve diagnostic precision but poorly rule out infection. Clinicians need strategies to take account of poor NPVs.

Indexed as

Reagent StripsAdolescentAdultAgedClinical Laboratory TechniquesEnglandFemaleHumansMiddle AgedPredictive Value of TestsSensitivity and SpecificityUrinalysisUrinary Tract InfectionsYoung AdultReagent Strips

Identifiers

PMID20594439
PMCPMC2894378

What OpenQuestion holds

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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.