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treatment comparison group

— A group of participants in a study allocated to receive one or more different treatments, usual care, or placebo


Synonyms:

arms of a trial, comparison group,

Full explanation:

Treatment comparison groups are used in studies of treatment effects.

Outcomes measured in one group are compared to outcomes in another group.

Treatment comparison groups are sometimes categorised as treatment groups (intervention groups or experimental groups) and control groups.

However, control groups always receive some type of treatment, for example, usual care, a placebo, or active monitoring. In this glossary we have used “treatment comparison groups” and not distinguished between “treatment” groups and “control” groups.

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