Skip to main content

Free Content Yield of interview screening and chest X-ray abnormalities in a tuberculosis prevalence survey

Download Article:
 Download
(PDF 314.7 kb)
 

Abstract:

BACKGROUND: Tuberculosis (TB) prevalence surveys generally rely on a combination of screening methods to identify suspects eligible for sputum culture.

OBJECTIVE: To assess the yield of screening methods applied in a recent prevalence survey in Viet Nam and estimate the proportion of TB cases missed due to incomplete participation.

METHODS: TB suspects were identified based on self-reported TB history or productive cough by interview and chest X-ray (CXR). We calculated the case yield of these two screening methods by dividing the number of cases detected per method by the total number of cases detected. As not all participants underwent the full screening procedure, we recalculated the maximum yield of the screening methods using multiple imputation methods.

RESULTS: The yield from screening by interview and CXR were respectively 38% and 91%. Adjusting for missing data by multiple imputation, we estimated that we missed 9.9% (95%CI 6.8–14.2) of expected TB cases.

CONCLUSION: In prevalence surveys, screening by pre-structured interview is insufficient, and should be supplemented with CXR to achieve sufficient identification of TB cases. The effect of incomplete participation in the full screening procedure may be substantial and should be adjusted for in the analysis.

Keywords: Viet Nam; prevalence; screening; tuberculosis

Document Type: Research Article

DOI: http://dx.doi.org/10.5588/ijtld.11.0581

Affiliations: 1: National Tuberculosis Programme Viet Nam, Hanoi, Viet Nam 2: Department of Global Health, Academic Medical Center, Amsterdam, The Netherlands 3: Amsterdam Institute of Global Health and Development, Academic Medical Center, Amsterdam, The Netherlands; Municipal Health Service (GGD), Amsterdam, The Netherlands 4: Department of Global Health, Academic Medical Center, Amsterdam, The Netherlands; Research Unit, KNCV Tuberculosis Foundation, The Hague, The Netherlands

Publication date: June 1, 2012

More about this publication?
  • The International Journal of Tuberculosis and Lung Disease publishes articles on all aspects of lung health, including public health-related issues such as training programmes, cost-benefit analysis, legislation, epidemiology, intervention studies and health systems research. The IJTLD is dedicated to the continuing education of physicians and health personnel and the dissemination of information on tuberculosis and lung health world-wide.

    Certain IJTLD articles are selected for translation into French, Spanish, Chinese or Russian. They are available on the Union website

  • Editorial Board
  • Information for Authors
  • Subscribe to this Title
  • International Journal of Tuberculosis and Lung Disease
  • Public Health Action
  • ingentaconnect is not responsible for the content or availability of external websites
iuatld/ijtld/2012/00000016/00000006/art00010
dcterms_title,dcterms_description,pub_keyword
6
5
20
40
5

Access Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content
Cookie Policy
X
Cookie Policy
ingentaconnect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more