Long-acting risperidone compared with oral olanzapine and haloperidol depot in schizophrenia: a Belgian cost-effectiveness analysis

PharmacoEconomics
Diana De GraeveJoseph Peuskens

Abstract

Patients with schizophrenia suffer numerous relapses and rehospitalizations that are associated with high direct and indirect medical expense. Suboptimal therapeutic efficacy and, in particular, problems with compliance are major factors leading to relapse. Atypical antipsychotic agents offer improved efficacy and a lower rate of extrapyramidal adverse effects compared with conventional antipsychotic drugs. Long-acting intramuscular risperidone combines these benefits with improvements in compliance associated with depot injections. To assist decision making regarding the place of long-acting risperidone in therapy, a cost-effectiveness analysis of strategies involving first-line treatment with long-acting risperidone, oral olanzapine or depot haloperidol was performed from the perspective of the Belgian healthcare system. A decision tree model was created to compare the cost effectiveness of three first-line treatment strategies in a sample of young schizophrenic patients who had been treated for 1 year and whose disease had not been diagnosed for longer than 5 years. The model used a time horizon of 2 years, with health state transition probabilities, resource use and cost estimates derived from clinical trials, expert opinio...Continue Reading

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