A comparison of extrapyramidal symptoms in older outpatients treated with quetiapine or risperidone
2004
SUMMARYObjective: To compare the tolerability of quetiapine with risperidone in older outpatients.Research design and methods: Post hoc analysis of a subset of older patients (aged 60–80; n = 92) from a randomized, 4-month, multicenter, open-label trial comparing quetiapine and risperidone in an outpatient setting. Participants had various neuropsychiatric disorders associated with psychosis as defined by criteria from the Diagnostic and Statistical Manual of Mental Disorders (4th edn).Main outcome measures: The main outcome measure was an extrapyramidal symptoms (EPS) checklist, used to assess motor symptoms, including parkinsonism, at baseline and after treatment. The Positive and Negative Syndrome Scale (PANSS) and the Clinical Global Impression scale were used to assess therapeutic efficacy.Results: Substantial EPS (defined as EPS requiring a dosage adjustment or use of medication to reduce EPS) occurred less often with quetiapine (median dosage, 200 mg/day) than with risperidone (median dosage, 3 mg/...
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