DEFINITION :  The Trial Arms (TA) domain defines the different arms of the clinical study. Each arm represents a group of subjects that receives a specific treatment or intervention.

PURPOSE : To document the various treatment groups in a trial, indicating whether a subject is assigned to a treatment group, a control group, or a placebo group. This helps in tracking how different subjects were treated during the study.

STRUCTURE : One record per planned Element per Arm

TOPIC : ARMCD

KEY VARIABLES : STUDYID, ARMCD, TAETORD