A cost-effectiveness and budget impact of treatments given to adults infected with genotype 1 hepatitis C virus was performed by comparing the non-treatment with combined therapy alfapeguinterferon-2a and 2b and ribavirin. The Markov model developed engineered the development of hepatitis C in a cohort of 1,000 patients for a period of 30 years for the various states of disease development. The combined therapy of ribavirin with alfapeguinterferon 2a or 2b have statistically identical effectiveness when evaluated at 30 years of disease. As for the impact of treatment in life years and years of life adjusted for quality of life, the life years gained for quality of life in relation to the evolution of the disease without treatment were 1.67 and 1.63, respectively, for combined therapy with alfapeguinterferon 2a and 2b, applying a 5% discount. The strategy of treatment with alfapeguinterferon 2a plus ribavirin was more cost-effective, dominating the other treatment. Although there are significant differences in effectiveness between the two types of alfapeguinterferon, the price difference between the two products makes the alternative of using alfapeguinterferon 2a plus ribavirin more effective. Concerning the estimated budget impact for the period 2008 to 2017, using alfapeguinterferon 2a plus ribavirin results in a reduction in spending of about 19% if all patients were treated using the selected treatment regimens.
cost-effectiveness evaluation; chronic hepatitis C; genotype 1; pegylated interferons; ribavirin
