Version Domain Sequence Variable Label Type Controlled Terminology or Format Role CDISC Notes Core
SDTMIG 3.3 SE 1 STUDYID Study Identifier Char Identifier Unique identifier for a study. Req
SDTMIG 3.3 SE 2 DOMAIN Domain Abbreviation Char SE Identifier Two-character abbreviation for the domain. Req
SDTMIG 3.3 SE 3 USUBJID Unique Subject Identifier Char Identifier Identifier used to uniquely identify a subject across all studies for all applications or submissions involving the product. Req
SDTMIG 3.3 SE 4 SESEQ Sequence Number Num Identifier Sequence number given to ensure uniqueness of subject records within a domain. Should be assigned to be consistent chronological order. Req
SDTMIG 3.3 SE 5 ETCD Element Code Char Topic 1. ETCD (the companion to ELEMENT) is limited to 8 characters and does not have special character restrictions. These values should be short for ease of use in programming, but it is not expected that ETCD will need to serve as a variable name. 2. If an encountered Element differs from the planned Element to the point that it is considered a new Element, then use "UNPLAN" as the value for ETCD to represent this Element. Req
SDTMIG 3.3 SE 6 ELEMENT Description of Element Char Synonym Qualifier The name of the Element. If ETCD has a value of "UNPLAN" then ELEMENT should be null. Perm
SDTMIG 3.3 SE 7 TAETORD Planned Order of Element within Arm Num Timing Number that gives the planned order of the Element within the subject's assigned Arm. Perm
SDTMIG 3.3 SE 8 EPOCH Epoch Char (EPOCH) Timing Epoch associated with the Element in the planned sequence of Elements for the Arm to which the subject was assigned. Perm
SDTMIG 3.3 SE 9 SESTDTC Start Date/Time of Element Char ISO 8601 Timing Start date/time for an Element for each subject. Req
SDTMIG 3.3 SE 10 SEENDTC End Date/Time of Element Char ISO 8601 Timing End date/time for an Element for each subject. Exp
SDTMIG 3.3 SE 11 SEUPDES Description of Unplanned Element Char Synonym Qualifier Description of what happened to the subject during an unplanned Element. Used only if ETCD has the value of "UNPLAN". Perm