alexa Aspirin, statins, or both drugs for the primary prevention of coronary heart disease events in men: a cost-utility analysis.
Clinical Research

Clinical Research

Journal of Clinical Research & Bioethics

Author(s): Pignone M, Earnshaw S, Tice JA, Pletcher MJ

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Abstract BACKGROUND: Aspirin and statins are both effective for primary prevention of coronary heart disease (CHD), but their combined use has not been well studied. OBJECTIVE: To perform a cost-utility analysis of the effects of aspirin therapy, statin therapy, combination therapy with both drugs, and no pharmacotherapy for the primary prevention of CHD events in men. DESIGN: Markov model. DATA SOURCES: Published literature. TARGET POPULATION: Middle-aged men without a history of cardiovascular disease at 6 levels of 10-year risk for CHD (2.5\%, 5\%, 7.5\%, 10\%, 15\%, and 25\%). TIME HORIZON: Lifetime. PERSPECTIVE: Third-party payer. INTERVENTIONS: Low-dose aspirin, a statin, both drugs as combination therapy, or no therapy. OUTCOME MEASURE: Cost per quality-adjusted life-year gained. RESULTS OF BASE-CASE ANALYSIS: For 45-year-old men who do not smoke, are not hypertensive, and have a 10-year risk for CHD of 7.5\%, aspirin was more effective and less costly than no treatment. The addition of a statin to aspirin therapy produced an incremental cost-utility ratio of 56,200 dollars per quality-adjusted life-year gained compared with aspirin alone. RESULTS OF SENSITIVITY ANALYSIS: Excess risk for hemorrhagic stroke and gastrointestinal bleeding with aspirin, risk for CHD, the cost of statins, and the disutility of taking medication had important effects on the cost-utility ratios. LIMITATIONS: Several input parameters, particularly adverse event rates and utility values, are supported by limited empirical data. Results are applicable to middle-aged men only. CONCLUSIONS: Compared with no treatment, aspirin is less costly and more effective for preventing CHD events in middle-aged men whose 10-year risk for CHD is 7.5\% or higher. The addition of a statin to aspirin therapy becomes more cost-effective when the patient's 10-year CHD risk before treatment is higher than 10\%.
This article was published in Ann Intern Med and referenced in Journal of Clinical Research & Bioethics

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