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Q How much weight is gained by people taking olanzapine or haloperidol for first episode psychosis?
Multicentre randomised controlled trial.
Follow up period:
14 academic medical centres in North America and Europe; March 1997 to July 2001.
263 people (aged 16–40 years) with DSM-IV schizophrenia, schizophreniform disorder, or schizoaffective disorder. Participants had experienced symptoms for 1–60 months, were defined as at least moderately ill, and in need of antipsychotic drugs. Exclusions: prior antipsychotic treatment for >16 weeks in total; having taken clozapine; currently receiving anticonvulsants, antidepressants, benzodiazepines (except for agitation and extrapyramidal symptoms), …
For correspondence: Dr Robert B Zipursky, Schizophrenia Programme, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T1R8;
Source of funding: Lilly Research Laboratories.
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