Comment on

• Effectiveness of clozapine versus olanzapine, quetiapine, and risperidone in patients with chronic schizophrenia who did not respond to prior atypical antipsychotic treatment.

  McEvoy JP, Lieberman JA, Stroup TS, Davis SM, Meltzer HY, Rosenheck RA, Swartz MS, Perkins DO, Keefe RS, Davis CE, Severe J, Hsiao JK; CATIE Investigators. McEvoy JP, et al. Am J Psychiatry. 2006 Apr;163(4):600-10. doi: 10.1176/ajp.2006.163.4.600. Am J Psychiatry. 2006. PMID: 16585434 Clinical Trial.
• Effectiveness of olanzapine, quetiapine, risperidone, and ziprasidone in patients with chronic schizophrenia following discontinuation of a previous atypical antipsychotic.

  Stroup TS, Lieberman JA, McEvoy JP, Swartz MS, Davis SM, Rosenheck RA, Perkins DO, Keefe RS, Davis CE, Severe J, Hsiao JK; CATIE Investigators. Stroup TS, et al. Am J Psychiatry. 2006 Apr;163(4):611-22. doi: 10.1176/ajp.2006.163.4.611. Am J Psychiatry. 2006. PMID: 16585435 Clinical Trial.