ArticleCost effectiveness and resource allocation : C/E2025
Cost-effectiveness of dabigatran for thromboembolic events prevention in atrial fibrillation patients in Chile.
Article in Cost effectiveness and resource allocation : C/E, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundAtrial fibrillation (AF) is the most common sustained arrhythmia in adults, associated with significant morbidity, mortality, and economic burden due to thromboembolic events. In Chile, acenocoumarol is the most widely used anticoagulant, while access to direct oral anticoagulants (DOACs) such as dabigatran, rivaroxaban, and apixaban remains limited for AF patients. Among DOACs, dabigatran is the only one with an approved specific reversal agent (idarucizumab) available in the Chilean public system. Evaluating the cost-effectiveness of these alternatives is critical for informing resource allocation.
aimsTo evaluate the cost-effectiveness of dabigatran compared to acenocoumarol, rivaroxaban and apixaban, for thromboembolic events prevention in atrial fibrillation (AF) patients, from the Chilean public health payer perspective.
methodsA Markov cohort model was used to represent the natural history of AF in terms of ischemic and hemorrhagic complications. Direct costs were obtained from local official sources and converted to US dollars (1 USD = 710.9 CLP at 2022). Data about major events and utilities were obtained from the literature. We applied an undifferentiated discount rate of 3% for costs and outcomes over a lifetime time horizon. Uncertainty was characterized through deterministic and probabilistic sensitivity analysis. We also examined the use of idarucizumab and prothrombin-complexes-concentrate (PCC) as reversal agents in an emergency setting as an additional scenario-analysis.
resultsDabigatran was the most (cost-)effective among all alternatives (8.53 QALYs). Considering the Chilean cost-effectiveness threshold of USD 17,200 (1 GDP per capita), dabigatran was cost-effective (USD 11,042 per QALY gained), while both rivaroxaban and apixaban were dominated by dabigatran. Regarding the second-order uncertainty, at the suggested threshold, dabigatran exhibit the highest probability of being cost-effective (approximately 60%). In the reversal agent scenario, dabigatran plus idarucizumab was also found to be cost-effective in the Chilean context.
conclusionDabigatran is cost-effective and dominates both rivaroxaban and apixaban at current publicly available prices in Chile. In addition, we expect dabigatran-idarucizumab is also expected to be cost-effective for Chilean health system when is compared against acenocoumarol-PCC as reversal agents.
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