COMPARATIVE STUDY
JOURNAL ARTICLE
MULTICENTER STUDY
PRAGMATIC CLINICAL TRIAL
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Comparison of Injectable and Oral Antipsychotics in Relapse Rates in a Pragmatic 30-Month Schizophrenia Relapse Prevention Study.

OBJECTIVE: In a pragmatic clinical trial, this study sought to compare relapses among patients receiving either long-acting injectable or oral second-generation antipsychotics.

METHODS: PROACTIVE (Preventing Relapse Oral Antipsychotics Compared to Injectables Evaluating Efficacy), a prior 30-month relapse prevention study, compared use of a long-acting injectable second-generation antipsychotic with use of an oral second-generation antipsychotic by 305 patients with schizophrenia or schizoaffective disorder and found similar rates of first relapse between groups (42% with injectable medication, 32% with oral medication). This study examined subsequent relapses among patients who had relapsed in PROACTIVE and who continued in treatment, follow-up, or both.

RESULTS: Thirty-two patients (11%) experienced two relapses, and 13 patients (4%) had three relapses. Neither rate of relapse nor time to successive relapses differed between treatment groups.

CONCLUSIONS: There was an impressively low rate of subsequent relapses in this pragmatic clinical trial. Because all patients had a clinic visit according to the biweekly long-acting injectable medication administration schedule, frequent contact may have contributed to low relapse rates. Maintaining frequent clinical contact may be a valid psychosocial relapse prevention treatment.

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