Directly observed therapy of tuberculosis in Brazil: Associated determinants and impact on treatment outcome

B. Reis-Santos, I. Pellacani-Posses, L. R. Macedo, J. E. Golub, L. W. Riley, E. L. Maciel

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11 Scopus citations


SETTING: All Brazilian states. OBJECTIVES: To assess the determinants of tuberculosis (TB) in patients undergoing directly observed therapy (DOT) and the impact of DOT on treatment outcomes. DESIGN: This is a cross-sectional study among TB patients aged ≥18 years conducted in 2011. The primary outcome was the status of DOTreceived, while the secondary was the outcome of anti-tuberculosis treatment. RESULTS: In 2011, 35 775 (38.3%) subjects received DOT. The odds of receiving DOT were higher in patients with the following characteristics: brown/mestizo patients (OR 1.18, 95%CI 1.14-1.22) and those of other ethnic groups (OR 2.01, 95%CI 1.79-2.27) compared to Whites, alcohol users (OR 1.37, 95%CI 1.28-1.47) and those with mental disorders (OR 1.88, 95%CI 1.54-2.29). The odds of receiving DOT were lower in human immunodeficiency virus positive patients (OR 0.64, 95%CI 0.60-0.68). Patients who did not receive DOT were more likely to default from antituberculosis treatment (OR 0.62, 95%CI 0.57-0.66), die due to TB (OR 0.68, 95%CI 0.61-0.77) and to have unknown treatment outcomes (OR 0.71, 95%CI 0.66- 0.76). The adjusted preventable fraction of DOT in the reduction of unfavorable outcomes was 25%. CONCLUSION: Sociodemographic and clinical characteristics are determinants of anti-tuberculosis treatment outcomes in patients undergoing DOT; DOTuse led to a 25% reduction in unfavorable outcomes.

Original languageEnglish (US)
Pages (from-to)1188-1193
Number of pages6
JournalInternational Journal of Tuberculosis and Lung Disease
Issue number10
StatePublished - Oct 1 2015


  • Conceptual models
  • Health impact assessment
  • Logistic models
  • Surveillance system
  • Vulnerable populations

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine
  • Infectious Diseases


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