Abstract
ABSTRACT Objective To assess the cost-effectiveness of single pill fixed dose triple combination therapy vs. free triple combination therapy for the prevention of cardiovascular events among patients with hypertension. Methods A Markov model with a five year cycle was constructed. Two decision models incorporating strict and more relaxed adherence definitions estimated quality adjusted life years (QALYs) and health-care costs for single pill fixed triple combination therapy vs. free-drug combination therapy. Results When the strict adherence measurement criteria were applied, the total QALYs loss and cost/patient were 6.38 QALYs, $486,026.20 for the single pill triple combination therapy and 8.64 QALYs, $406,405.26 for the free combination therapy. ICER for single pill combination therapy compared to free combination therapy was 33,826.46/QALY. When the relaxed adherence measurement criteria were applied, the total QALYs loss and cost/patient were 8.09 QALYs, $493,404.26 for the single pill triple combination therapy and 8.76 QALYs, $436,415.14 for the free combination therapy. ICER for single pill combination compared with free combination therapy was 84,932.26. Conclusion This study suggested that single pill triple combination therapy was cost-effective in comparison with free combination therapy under a willingness to pay threshold of 50,000 when the strict adherence measurement criteria was applied.
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