SAS Clinical Trials Programming Practice Questions - SAS Certified Professional Clinical Trials Programming Using SAS 9.4 Exam

What is the purpose of the USUBJID variable in SDTM and ADaM datasets?

It stores the subject's date of birth It is a unique identifier for a subject across all studies in a submission It identifies the visit number It identifies the treatment arm

Correct Answer:

It is a unique identifier for a subject across all studies in a submission

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