A three-year Markov model with quarterly cycles was developed in TreeAge Pro® 2009 to assess the cost-effectiveness of six listed oral antipsychotic drugs for the first-line treatment of schizophrenia in the Brazilian public health system (haloperidol, chlorpromazine, risperidone, quetiapine, ziprasidone, and olanzapine) and oral aripiprazole. 
TreeAge Pro