Journal
CLINICAL THERAPEUTICS
Volume 36, Issue 10, Pages 1389-1394Publisher
ELSEVIER
DOI: 10.1016/j.clinthera.2014.08.016
Keywords
Asian; atrial fibrillation; cost utility; new oral anticoagulant; stroke
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Purpose: The genetic polymorphism was one of the major considerations for adjusting doses of warfarin in Thai individuals. As a result, new oral anticoagulants (NOACs) were introduced to achieve therapeutic goals in stroke prevention in atrial fibrillation (SPAF) patients. However, a cost-utility analysis in a population-specific model was lacking in Thailand. This study was performed to determine which NOACs yielded population-specific, cost-effective results for SPAF compared with warfarin from both governmental and societal perspectives in Thailand. Methods: A simplified Markov health state model was constructed to calculate the lifetime cost, life-years saved, and quality-adjusted life-years (QALYs) gained. Asia-specific clinical event parameters were defined from systematic searches of Pub Med. Cost and utility input was obtained from hospital based data collection. Findings: Although NOACs produced more life-years saved and QALYs gained resulting from the base-case versus warfarin, the lifetime costs of new alternatives increased to > 1.4 times the comparative cost of warfarin. This caused an incremental cost-effective ratio that exceeded Thailand's cost-effectiveness threshold. The probabilistic sensitivity analysis denoted the robustness of our model and revealed that dose-adjusted warfarin was the most cost-effective option in >99% of iterations. NOACs produced cost-effective results when the medication unit cost was decreased by at least 85%. (C) 2014 Elsevier HS Journals, Inc. All rights reserved.
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