A Study to Compare the Efficacy and Safety of Ziprasidone and Risperidone for the Treatment of Schizophrenia in Chinese Patients

A Six Week, Multicenter, Double Blind, Double-Dummy, Parallel, Comparative Study To Compare The Efficacy, Safety And Tolerability Of Ziprasidone With Risperidone In The Treatment Of Chinese Subjects With Acute Exacerbation Of Schizophrenia

The purpose of this study is to compare the efficacy and safety of ziprasidone and risperidone for the treatment of schizophrenia in Chinese patients

Inclusion Criteria:

• Hospitalized patients with schizophrenia
• Miminum PANSS score of 60 when randomized

Exclusion Criteria:

• Planned, regular use of antipsyhotics within 1 week of randomization
• Previous treatment with risperidone that resulted in intolerance or lack of response to risperidone