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

• Drug: Risperidone
  
  Oral risperidone capsules 1 and 2 mg; doses were 1 mg once daily on Days 1-2, 2 mg once daily on Days 3-4, 3 mg once daily on Days 5-7, and 1, 2, or 3 mg twice daily during Weeks 2-6
• Drug: Ziprasidone
  
  Oral ziprasidone capsules 40, 60, and 80 mg; doses were 40 mg twice daily on Days 1-2, 60 mg twice daily on Days 3-7, and 40, 60, or 80 mg twice daily during Weeks 2-6

• Active Comparator: A
  
  Intervention: Drug: Risperidone
• Experimental: B
  
  Intervention: Drug: Ziprasidone

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