conclusions
The majority of patients in each group discontinued their assigned treatment owing to
inefficacy or intolerable side effects or for other reasons. Olanzapine was the most effective
in terms of the rates of discontinuation, and the efficacy of the conventional antipsychotic
agent perphenazine appeared similar to that of quetiapine, risperidone, and
ziprasidone. Olanzapine was associated with greater weight gain and increases in measures
of glucose and lipid metabolism.