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http://dx.doi.org/10.4332/KJHPA.2013.23.4.349

Economic Analysis of Latent Tuberculosis Infection Screening Strategies in Korea  

Kim, Sang-Won (Department of Health Informatics and Management, Chungbuk National University College of Medicine)
Kang, Gil-Won (Department of Health Informatics and Management, Chungbuk National University College of Medicine)
Shin, Sam-Chul (Department of Health Informatics and Management, Chungbuk National University College of Medicine)
Song, Seung-Eun (Department of Health Informatics and Management, Chungbuk National University College of Medicine)
Publication Information
Health Policy and Management / v.23, no.4, 2013 , pp. 349-357 More about this Journal
Abstract
Background: Although interferon-gamma release assay (IGRA) is now available alternatives to tuberculin skin test (TST) for detection of latent tuberculosis infection (LTBI), the cost of IGRA test is much higher than TST. So economic analysis of LTBI screening strategies have been done in many countries, but there are few reports in Korea. This study examined cost analysis of LTBI screening strategies in Korea. Methods: The economic outcomes were evaluated by five strategies. These were 1) TST alone, 2) IGRA alone, 3) combination of TST and IGRA (TST followed by IGRA) and 4) no testing no prevention, 5) no testing all prevention. Last two strategies were added to compare with three main LTBI screening strategies. Decision analysis model were used to perform economic analysis. A cohort study of Korean Institute of Tuberculosis and the data of published literatures were used to estimate the cost analysis. Results: In a base-case scenario which was assumed that TST specificity was 80%, TST alone was the least expensive strategy. In a alternative scenario which was assumed that TST specificity was 97%, the combination of TST and IGRA was the least expensive strategy. Sensitivity analysis shows that patients adherent rate to LTBI treatment, TST sensitivity, IGRA sensitivity and IGRA specificity did not have a significant impact on the outcomes. Conclusion: In Korea, for the diagnosis of LTBI at the time of child and adolescent, TST alone reduces medical costs compared with IGRA alone or combination of TST and IGRA.
Keywords
Costs and cost analysis; Latent tuberculosis infection; Tuberculosis;
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