A 52 Week Open-label Extension Trial Following the Double-blind Efficacy and Safety Study R076477-SCH-305.

The primary objective of the open-label extension trial was the long-term assessment of safety and tolerability of flexibly-dosed ER OROS paliperidone (3 to 15 mg/day) in patients with a diagnosis of schizophrenia. Other measures assessed in the extension study included: change in the total Positive and Negative Syndrome Scale (PANSS) score; change in PANSS subscale (positive and negative) scores; overall functioning, as measured by the Clinical Global Impression Scale-Severity (CGI-S); personal and social functioning, as measured by the Personal and Social Performance Scale (PSP); and quality of life parameters, as measured by the Schizophrenia Quality of Life Scale, Revision 4 (SQLS-R4). Paliperidone ER OROS® tablet formulation (3 to 15 mg/day) to be taken orally for 52 weeks

Inclusion criteria

• Study R076477-SCH-707 enrolled patients who met the DSM-IV criteria of schizophrenia for at least 1 year
• Eligible patients were experiencing active symptoms at the time of enrollment and had a PANSS total score between 70 and 120
• The open-label extension study population comprised patients who had completed the 6-week double-blind phase of the study or who had discontinued due to lack of efficacy after at least 21 days of treatment.

Exclusion criteria

• Not eligible to enter the open-label phase if believed to be at significant risk for suicidal or violent behavior during the open-label extension trial
• Were pregnant
• Or had received an injection of a depot antipsychotic since entry into the preceding double-blind phase