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Would the use of a
crossover design be likely to offer advantages over a parallel
group design in comparing an antidepressant drug for the
treatment of major depression to placebo?
You
answered:
No.
CORRECT
Psychiatrists studying depression do not use crossover
designs because positive treatment responses are often of
long duration, often persisting for months after the antidepressant
drug is stopped (R Prien, 1994).
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