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A Comparison of Long-Term Outcome in First-Episode Schizophrenia Following Treatment With Risperidone or a Typical Antipsychotic.
Background: Most reports assessing the efficacy and tolerability of risperidone have involved patients previously treated with typical antipsychotics. Such patients are more likely to have a greater resistance or intolerance to treatment, thus restricting our interpretation of the impact a new treatment might have on the course of schizophrenia and possibly biasing the results. The present study examines the relative effectiveness of risperidone and typical antipsychotics in patients being treated for their first episode of schizophrenia.
Method: From a cohort of 126 patients, 2 groups of 19 first-episode DSM-III-R/DSM-IV schizophrenia patients matched for age, gender, length of illness, and length of treatment and treated with either a typical antipsychotic or risperidone for a minimum of 1 year were compared on a number of outcome dimensions during their course of treatment and at follow-up. Treatment allocation was not random, and patients were judged to be compliant with medication. Patients treated with typical antipsychotics were followed up for a statistically nonsignificantly longer time (mean = 2.7 vs. 1.9 years).
Results: Six patients (31.6%) from the typical antipsychotic group were admitted to the hospital within the first year following the index admission compared with 1 patient (5.3%) in the risperidone group (admitted at month 14). Patients in the risperidone group showed a statistically significantly lower length of first hospitalization (p < .01), utilization of inpatient beds during the course of treatment (p < .001), and use of anticholinergic medication (p < .05). There were no statistically significant differences in symptom levels, either during the course of treatment or at follow-up; in the use of antidepressant, antianxiety, or mood-stabilizing drugs; or in changes in living circumstances or employment.
Conclusion: These findings confirm at least equal long-term efficacy of typical antipsychotics and risperidone, but a possible advantage for risperidone in decreased service utilization and decreased use of anticholinergic drugs.