title: Rehospitalization rates of patients recently discharged on a regimen of risperidone or clozapine.
abstract: OBJECTIVE
  The purpose of this study was to examine rehospitalization rates of people receiving risperidone or clozapine who had been discharged from state psychiatric hospitals in Maryland.
  
  
  METHODS
  Rehospitalization status was monitored for all patients discharged from state psychiatric facilities on a regimen of either risperidone or clozapine between March 14, 1994, and Dec. 31, 1995. Patients were followed up with respect to readmission until Dec. 31, 1996. Time to readmission was measured by the product-limit (Kaplan-Meier) formula. Risk factors associated with rehospitalization were examined.
  
  
  RESULTS
  One hundred sixty patients were discharged on risperidone, 75 having the diagnosis of schizophrenia. The patients with schizophrenia were more likely to be readmitted than the 85 patients with other mental disorders. Recidivism rates for schizophrenic patients discharged on risperidone versus those discharged on clozapine were not significantly different over the 24-month study period. However, no patient who received clozapine and remained discharged for more than 10 months (N = 49) was readmitted, while the readmission rate for risperidone-treated patients appeared to be steady up to 24 months. At 24 months 87% of the clozapine-treated patients and 66% of the risperidone-treated patients remained in the community. No clinical or demographic variables were found to predict rehospitalization.
  
  
  CONCLUSIONS
  This study demonstrates that the rehospitalization rates of patients taking the second-generation antipsychotics risperidone and clozapine are lower than those in previously published reports of conventional antipsychotic treatment.
authors.affiliation: Maryland Psychiatric Research Center, University of Maryland, Baltimore, USA.
authors.forename: R R
authors.initials: RR
authors.lastname: Conley
authors.forename: R C
authors.initials: RC
authors.lastname: Love
authors.forename: D L
authors.initials: DL
authors.lastname: Kelly
authors.forename: J J
authors.initials: JJ
authors.lastname: Bartko
mesh_terms: D000328:Adult; D014150:Antipsychotic Agents / Q000627:therapeutic use*; D003024:Clozapine / Q000627:therapeutic use*; D005260:Female; D006778:Hospitals, Psychiatric / Q000706:statistics & numerical data; D006783:Hospitals, State / Q000706:statistics & numerical data; D006801:Humans; D008297:Male; D010351:Patient Discharge / Q000706:statistics & numerical data; D010359:Patient Readmission / Q000706:statistics & numerical data*; D011618:Psychotic Disorders / Q000188:drug therapy*; D012008:Recurrence; D012307:Risk Factors; D018967:Risperidone / Q000627:therapeutic use*; D012559:Schizophrenia / Q000188:drug therapy; D016896:Treatment Outcome
chemical_list: D014150:Antipsychotic Agents; D003024:Clozapine; D018967:Risperidone