Evidence map›Paper›PMID 21514236›Full record

ArticleThe Lancet. Infectious diseases2011

Screening of immigrants in the UK for imported latent tuberculosis: a multicentre cohort study and cost-effectiveness analysis.

Manish Pareek, John P Watson, L Peter Ormerod, Onn Min Kon, Gerrit Woltmann, Peter J White, Ibrahim Abubakar, Ajit Lalvani

Abstract readMulticenter Study
In one paragraph

Article in The Lancet. Infectious diseases, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 90 papers, 9 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
90citing papers in PubMed, 9 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

90 citing papers in PubMed, 9 syntheses or guidelines pooled it.

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  5. The effectiveness and cost-effectiveness of screening for latent tuberculosis among migrants in the EU/EEA: a systematic review.Euro surveillance : bulletin Europeen sur les maladies transmissibles = European communicable disease bulletin · 2018
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  16. Enhanced screening for tuberculosis infection among immigrants in southern New Brunswick: A cross-sectional pilot study.Canada communicable disease report = Releve des maladies transmissibles au Canada · 2025
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30 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Manish PareekDepartment of Infectious Disease Epidemiology, Imperial College London, London, UK.
John P Watson
L Peter Ormerod
Onn Min Kon
Gerrit Woltmann
Peter J White
Ibrahim Abubakar
Ajit Lalvani

Funding

Medical Research CouncilWellcome Trust
6 · The paper itself

Abstract

backgroundContinuing rises in tuberculosis notifications in the UK are attributable to cases in foreign-born immigrants. National guidance for immigrant screening is hampered by a lack of data about the prevalence of, and risk factors for, latent tuberculosis infection in immigrants. We aimed to determine the prevalence of latent infection in immigrants to the UK to define which groups should be screened and to quantify cost-effectiveness.

methodsIn our multicentre cohort study and cost-effectiveness analysis we analysed demographic and test results from three centres in the UK (from 2008 to 2010) that used interferon-γ release-assay (IGRA) to screen immigrants aged 35 years or younger for latent tuberculosis infection. We assessed factors associated with latent infection by use of logistic regression and calculated the yields and cost-effectiveness of screening at different levels of tuberculosis incidence in immigrants' countries of origin with a decision analysis model.

findingsResults for IGRA-based screening were positive in 245 of 1229 immigrants (20%), negative in 982 (80%), and indeterminate in two (0·2%). Positive results were independently associated with increases in tuberculosis incidence in immigrants' countries of origin (p=0·0006), male sex (p = 0·046), and age (p < 0·0001). National policy thus far would fail to detect 71% of individuals with latent infection. The two most cost-effective strategies were to screen individuals from countries with a tuberculosis incidence of more than 250 cases per 100,000 (incremental cost-effectiveness ratio [ICER] was £17,956 [£1=US$1·60] per prevented case of tuberculosis) and at more than 150 cases per 100,000 (including immigrants from the Indian subcontinent), which identified 92% of infected immigrants and prevented an additional 29 cases at an ICER of £20,819 per additional case averted.

interpretationScreening for latent infection can be implemented cost-effectively at a level of incidence that identifies most immigrants with latent tuberculosis, thereby preventing substantial numbers of future cases of active tuberculosis.

fundingMedical Research Council and Wellcome Trust.

Indexed as

Emigrants and ImmigrantsAdolescentAdultChildChild, PreschoolCohort StudiesCost-Benefit AnalysisDecision TreesFemaleHumansIncidenceInterferon-gammaLatent TuberculosisMaleMass ScreeningPrevalenceInterferon-gamma

Identifiers

PMID21514236
PMCPMC3108102

What OpenQuestion holds

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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.