In this study, the investigators are going to examine the effectiveness of paliperidone palmitate after changing from other antipsychotics. This study design is a Prospective Naturalistic Case Series Study. The effectiveness of paliperidone would be compared within three different groups of schizophrenia. Investigators would also assess the safety during 24 weeks follow up period.
The purpose of this study is the evaluation of effectiveness of paliperidone palmitate within three different group of schizophrenia patients.