Evidence map›Paper›PMID 25015682›Full record

ArticleBMC public health2014

A household survey on screening practices of household contacts of smear positive tuberculosis patients in Vietnam.

Thuy Hoang Thi Thanh, Sy Dinh Ngoc, Nhung Nguyen Viet, Hung Nguyen Van, Peter Horby, Frank G J Cobelens, Heiman F L Wertheim

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In one paragraph

Article in BMC public health, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 2 pooled it
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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

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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

17 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

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5 · Who and what money

Authors and funding

7 authors.

Thuy Hoang Thi ThanhNational Tuberculosis Control Programme of Vietnam, National Lung Hospital (VNTP-NLH), Hanoi, Vietnam. hoangthanht@gmail.com.
Sy Dinh Ngoc
Nhung Nguyen Viet
Hung Nguyen Van
Peter Horby
Frank G J Cobelens
Heiman F L Wertheim

Funding

Wellcome Trust
6 · The paper itself

Abstract

backgroundClose contacts of tuberculosis (TB) patients are at increased risk of developing tuberculosis. Although passive contact screening guidelines are incorporated in the national TB control program, currently it is unknown how frequent close contacts are screened for TB in Vietnam. This study assesses current contact screening practices in Vietnam and determines the proportion of household contacts screened of newly registered TB patients.

methodSurvey of household contacts of smear-positive TB patients (index patients) registered for treatment in 2008 in three Vietnamese cities. Households were interviewed in 2010 about screening for TB since treatment registration date of the index patient.

resultsWe interviewed 4,118 household contacts of 1,091 identified index cases. Contact screening mainly relied on self-referral by household contacts. Of the 4,118 household contacts, 474 (11.5%) self-referred for TB screening, while this screening proportion was only 5.5% among contacts under 5 years old (16/293). Sputum examinations were performed in 374 (78.9%) of the screened contacts. Contact screening identified 27 cases of pulmonary TB (0.7%; or 656 cases/100,000 contacts), of which 20 were detected by sputum smear.

conclusionsThe low proportion of household TB contacts screened for TB illustrates the limitations of passive contact screening as currently practiced in Vietnam. Children under 5 years of age are particularly neglected with this approach. Active contact screening with fixed follow-up times of close contacts of newly diagnosed TB patients should be considered in Vietnam, particularly in case of young children and drug-resistant TB.

Indexed as

Contact TracingAdolescentChildChild, PreschoolFemaleHealth SurveysHumansInfantInterviews as TopicMaleMass ScreeningMycobacteriumSputumTuberculosis, PulmonaryVietnam

Identifiers

PMID25015682
PMCPMC4226947

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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.