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Trial Arms describes each planned arm in a trial. An arm is an ordered sequence of elements; the same element may occur more than once in a given arm. In order to accommodate complex trial designs, this dataset allows for rules for branching from one element to another when a choice is available, and a rule for transitions to allow a subject to skip ahead to another element rather than proceed linearly.
Note that although the same element may occur more than once within an arm, each occurrence would have a different value for TAETORD and EPOCH, and may have different values for TABRANCH and TATRANS.
Trial Arms—One Record per Planned Element per Arm
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