Study designs Parallel double-blind placebo-controlled75 Parallel double-blind placebo-controlled75
Subjects are randomly assigned to either treatment or control arms, and they remain in that arm for the duration of the study
Double-blinded: both investigators and subjects are masked to the treatment
Advantages include reducing bias through randomization, experiments can be run simultaneously in a number of groups, and groups can be in separate locations
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OverviewPlacebo controlled
Crossover Laboratory school protocol Adult workplace environment Pharmacokinetic studies Basic PK measurements