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Free Content Predictors and mortality associated with treatment default in pulmonary tuberculosis

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Abstract:

OBJECTIVE: To identify risk factors for default from pulmonary tuberculosis (TB) treatment and to assess mortality associated with default in Estonia.

DESIGN: All patients with culture-confirmed pulmonary TB who started treatment during 2003–2005 were included in a retrospective cohort study.

RESULTS: In 1107 eligible patients, the treatment success rate was 81.5% and the default rate 9.4% (respectively 60.4% and 17.0% in multidrug-resistant TB [MDR-TB]). Independent predictors of treatment default were alcohol abuse (OR 3.22, 95%CI 1.93–5.38), unemployment (OR 3.05, 95%CI 1.84–5.03), MDR-TB (OR 2.17, 95%CI 1.35–3.50), urban residence (OR 1.85, 95%CI 1.00–3.42) and previous incarceration (OR 1.78, 95%CI 1.05–3.03). Of the defaulters, 29.4% died during follow-up (median survival 342.0 days). Cox regression analysis revealed that unemployment was associated with all-cause and TB-related mortality among defaulters (respectively HR 4.58, 95%CI 1.05–20.1 and HR 11.2, 95%CI 1.58–80.2). HIV infection (HR 51.2, 95%CI 6.06–432), sputum smear positivity (HR 9.59, 95%CI 1.79–51.4), MDR-TB (HR 8.56, 95%CI 1.81–40.4) and previous TB (HR 5.15, 95%CI 1.64–16.2) were predictors of TB-related mortality.

CONCLUSION: The main risk factors for treatment default can be influenced. Interventions to reduce default should therefore concentrate on socially disadvantaged patients and prevention of alcohol abuse, with special attention given to MDR-TB patients.

Keywords: mortality; multidrug-resistant tuberculosis; pulmonary tuberculosis; treatment default

Document Type: Regular Paper

Affiliations: Department of Pulmonary Medicine, University of Tartu, Tartu, Estonia

Publication date: April 1, 2010

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  • 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

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