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Systematic review with meta analysis.
MEDLINE (to April 2004), and manual search of selected journals (January 1980 to April 2004).
Study selection and analysis:
Studies were included if they were English language randomised controlled trials (RCTs) comparing two or more strategies for switching between two non-depot antipsychotic medications, including abrupt or gradual discontinuation of current medication and abrupt or gradual replacement with new medication. Meta-analysis was conducted to calculate correlation measure of effect size (r) for outcomes common to more than one study. These were calculated separately for the discontinuation and the replacement phases of the trials.
Symptoms (including Clinical Global Impressions—Severity Scale; Positive and Negative Syndrome Scale); adverse events (including …
For correspondence: Dr G Remington, Department of Psychiatry, University of Toronto, Centre for Addiction and Mental Health, 250 College Street, Toronto, Ontario, Canada M5T 1R8; gary_
Sources of funding: not reported.
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