Factorial assignment

Factorial assignment refers to a type of intervention model describing a clinical trial in which groups of participants receive one of several combinations of therapies or interventions. For example, two-by-two factorial assignment involves four groups of participants. Each group receives one of the following pairs of interventions: (1) drug A and drug B, (2) drug A and a placebo, (3) a placebo and drug B, or (4) a placebo and a placebo. So during the trial, all possible combinations of the two drugs (A and B) and the placebos are given to different groups of participants.

Sourced From
ClinicalTrials.gov Glossary of Common Site Terms

« Back to Glossary Index