Psychiatric emergency multi-center randomized clinical trial on unanswered questions of pharmacotherapy in acute-phase schizophrenia

INTERVENTION: olanzapine up to 40mg risperidone up to 12mg CONDITION: schizophrenia, schizophreniform disorder, schizoafective disorder PRIMARY OUTCOME: (1) rate of 50% improvement in PANSS total score; (2) rate of treatment discontinuation for any cause SECONDARY OUTCOME: (1) torelability (DIEPSS, rate of treatment discontinuation for adverse event), change in vital signs and weight; (2) improvement in symptoms (PANSS total, subscales, CGI, GAF) INCLUSION CRITERIA: Patients who are admitted to psychiatric emergnecy hospitals due to acute‐psychotic state, diagnosed as DSM‐IV: 295.xx