DEFINITION
A group of participants in a research study who all receive the same study treatment.
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USE IN A SENTENCE
As a participant in a study with two study arms, you will be part of one group that receives one study treatment that will be compared to a second group that receives a different study treatment.
MORE INFO
Studies that compare two or more study treatments divide participants into separate groups. These groups are called arms and are used to assess the impact of the different treatments.
OTHER WORDS USED
cohort
study arm
group
treatment group
RELATED WORDS
randomization
OPPOSITE WORDS
OTHER RESOURCES