A Study Evaluating the Treatment Selection and Outcome When Changing Antipsychotic Treatment in Schizophrenic Patients

Inclusion Criteria: * Diagnosis of schizophrenia (as per DSM-IV), at least 6 months prior to enrolment in the study * Subjects who have initiated a new antipsychotic treatment within the preceding 2 weeks * Subjects whose prior and current antipsychotic treatment consists of any typical or atypical antipsychotic monotherapy Exclusion Criteria: * Subjects fulfilling criteria for diagnosis of any other psychiatric condition (except from schizophrenia), as per DSM-IV Axis Ι, concomitant organic mental disorder or mental retardation * Substance abuse or dependence (with the exception of nicotine dependence), as defined by DSM-IV criteria and not in full remission * Female subjects who are pregnant or lactating