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Real-world impact of the fixed-dose combination on improving treatment outcomes of drug-susceptible tuberculosis: a comparative study using multiyear national tuberculosis patient data

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dc.contributor.authorKi, Min Seo-
dc.contributor.authorJeong, Dawoon-
dc.contributor.authorKang, Hee-Yeon-
dc.contributor.authorChoi, Hongjo-
dc.contributor.authorSohn, Hojoon-
dc.contributor.authorKang, Young Ae-
dc.identifier.citationBMJ Open Respiratory Research, Vol.10 No.1, p. e001758-
dc.description.abstractBACKGROUND: The fixed-dose combination (FDC) for first-line antituberculosis (TB) treatment has long been a standard practice worldwide; however, there is limited evidence on whether the use of FDC improves long-term treatment outcomes in the real-world setting. METHODS: We identified 32 239 newly diagnosed patients with drug-susceptible (DS) TB in 2015 and 2016 who had been prescribed FDC or non-FDC TB treatment from a multiyear (2013-2018) national TB cohort database that linked the Korean National Tuberculosis Surveillance System, the National Health Insurance Database and the Health Insurance Review and Assessment Service database. Inverse probability of treatment weighting (IPTW) with a propensity score was used to control for differences in patient characteristics between 5926 patients with TB treated with FDC and 26 313 patients with non-FDC. Multivariable logistic regression analyses were performed to assess for the factors influencing treatment outcomes between the two groups. RESULTS: After IPTW, new patients with DS-TB treated with FDC had higher treatment completion rate (83.9% vs 78.9%, p<0.01) and lower death rates (8.2% vs 9.8%, p<0.01) with similar TB recurrence rate (2.3% vs 2.4%) compared with those treated with non-FDC. In multivariable analyses, FDC use had higher odds treatment completion (adjusted OR 1.45; 95% CI 1.34 to 1.56). Patients with TB with younger age (relative to 70+ age) and higher income level had higher odds for treatment completion. Use of FDC did not influence TB recurrence after treatment completion (adjusted HR 0.94; 95% CI 0.77 to 1.16). The acquired drug resistance rate was similar between the two groups (drug-resistant TB in FDC 4.7% vs non-FDC 5.3%; p=0.80). CONCLUSION: In Korea, prescription of FDC to treat newly diagnosed patients with DS TB improved patient's treatment completion. Use of FDC did not increase the risks of TB recurrence or development of drug resistance.-
dc.publisherBritish Thoracic Society | BMJ Publishing Group Ltd-
dc.titleReal-world impact of the fixed-dose combination on improving treatment outcomes of drug-susceptible tuberculosis: a comparative study using multiyear national tuberculosis patient data-
dc.citation.journaltitleBMJ Open Respiratory Research-
dc.contributor.affiliatedAuthorSohn, Hojoon-
dc.subject.keywordPlusPULMONARY TUBERCULOSIS-
dc.subject.keywordPlusSEPARATE DRUGS-
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  • College of Medicine
  • Department of Human Systems Medicine
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